diff --git a/src/apis/dialogflow/v3.ts b/src/apis/dialogflow/v3.ts
index dfe9e0173fc..d0de176524a 100644
--- a/src/apis/dialogflow/v3.ts
+++ b/src/apis/dialogflow/v3.ts
@@ -34,6 +34,12 @@ import {
   APIRequestContext,
 } from 'googleapis-common';
 import {Readable} from 'stream';
+import {
+  validateSingleSegment,
+  validateMultiSegment,
+  encodeWithSlashes,
+  encodeWithoutSlashes,
+} from '../../transcoding';
 
 export namespace dialogflow_v3 {
   export interface Options extends GlobalOptions {
@@ -3784,11 +3790,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -3936,14 +3949,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}/locations').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+name}/locations')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -4215,14 +4232,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/agents').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/agents')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -4353,11 +4374,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -4507,11 +4535,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:export').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}:export')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -4669,11 +4704,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -4822,11 +4864,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -4971,11 +5020,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -5121,14 +5177,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/agents').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/agents')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -5321,11 +5381,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -5476,14 +5543,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:restore').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+name}:restore')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -5644,11 +5715,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -5798,14 +5876,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:validate').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+name}:validate')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -6081,11 +6163,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -6234,14 +6323,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/changelogs').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/changelogs')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -6439,14 +6532,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/entityTypes').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/entityTypes')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -6580,11 +6677,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -6735,14 +6839,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/entityTypes:export').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/entityTypes:export')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -6891,11 +6999,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -7047,14 +7162,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/entityTypes:import').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/entityTypes:import')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -7201,14 +7320,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/entityTypes').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/entityTypes')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -7376,11 +7499,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -7657,14 +7787,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/environments').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/environments')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -7794,11 +7928,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -7947,14 +8088,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.environment !== undefined && params.environment !== null) {
+        validateMultiSegment('environment', String(params.environment));
+        params.environment = encodeWithoutSlashes(String(params.environment));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+environment}:deployFlow').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+environment}:deployFlow')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -8100,11 +8245,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -8251,14 +8403,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/environments').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/environments')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -8408,14 +8564,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:lookupEnvironmentHistory').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+name}:lookupEnvironmentHistory')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -8572,11 +8732,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -8723,14 +8890,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.environment !== undefined && params.environment !== null) {
+        validateMultiSegment('environment', String(params.environment));
+        params.environment = encodeWithoutSlashes(String(params.environment));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+environment}:runContinuousTest').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+environment}:runContinuousTest')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -8975,14 +9146,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/continuousTestResults').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/continuousTestResults')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -9152,11 +9327,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -9305,14 +9487,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/deployments').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/deployments')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -9520,14 +9706,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/experiments').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/experiments')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -9660,11 +9850,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -9819,11 +10016,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -9972,14 +10176,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/experiments').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/experiments')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -10160,11 +10368,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -10327,11 +10542,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:start').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}:start')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -10494,11 +10716,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:stop').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}:stop')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -10747,14 +10976,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.session !== undefined && params.session !== null) {
+        validateMultiSegment('session', String(params.session));
+        params.session = encodeWithoutSlashes(String(params.session));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+session}:detectIntent').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+session}:detectIntent')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -10913,14 +11146,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.session !== undefined && params.session !== null) {
+        validateMultiSegment('session', String(params.session));
+        params.session = encodeWithoutSlashes(String(params.session));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+session}:fulfillIntent').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+session}:fulfillIntent')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -11081,14 +11318,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.session !== undefined && params.session !== null) {
+        validateMultiSegment('session', String(params.session));
+        params.session = encodeWithoutSlashes(String(params.session));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+session}:matchIntent').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+session}:matchIntent')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -11250,13 +11491,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.session !== undefined && params.session !== null) {
+        validateMultiSegment('session', String(params.session));
+        params.session = encodeWithoutSlashes(String(params.session));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/v3/{+session}:serverStreamingDetectIntent'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+session}:serverStreamingDetectIntent')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -11466,14 +11712,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/entityTypes').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/entityTypes')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -11608,11 +11858,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -11757,11 +12014,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -11912,14 +12176,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/entityTypes').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/entityTypes')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -12078,11 +12346,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -12326,14 +12601,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/flows').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/flows')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -12466,11 +12745,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -12617,11 +12903,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:export').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}:export')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -12770,11 +13063,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -12921,11 +13221,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -13076,14 +13383,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/flows:import').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/flows:import')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -13229,14 +13540,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/flows').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/flows')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -13409,11 +13724,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -13559,11 +13881,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:train').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}:train')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -13712,14 +14041,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:validate').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+name}:validate')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -14020,14 +14353,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/pages').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/pages')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -14161,11 +14498,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -14312,11 +14656,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -14466,14 +14817,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/pages').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/pages')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -14641,11 +14996,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -14885,14 +15247,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/transitionRouteGroups').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/transitionRouteGroups')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -15029,11 +15395,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -15178,11 +15551,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -15335,14 +15715,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/transitionRouteGroups').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/transitionRouteGroups')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -15503,11 +15887,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -15742,14 +16133,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.baseVersion !== undefined && params.baseVersion !== null) {
+        validateMultiSegment('baseVersion', String(params.baseVersion));
+        params.baseVersion = encodeWithoutSlashes(String(params.baseVersion));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+baseVersion}:compareVersions').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+baseVersion}:compareVersions')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -15904,14 +16299,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/versions').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/versions')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -16041,11 +16440,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -16190,11 +16596,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -16342,14 +16755,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/versions').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/versions')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -16498,11 +16915,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:load').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}:load')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -16662,11 +17086,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -16910,14 +17341,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/generators').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/generators')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -17051,11 +17486,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -17201,11 +17643,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -17354,14 +17803,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/generators').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/generators')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -17525,11 +17978,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -17772,14 +18232,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/intents').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/intents')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -17910,11 +18374,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -18063,14 +18534,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/intents:export').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/intents:export')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -18215,11 +18690,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -18369,14 +18851,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/intents:import').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/intents:import')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -18524,14 +19010,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/intents').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/intents')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -18696,11 +19186,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -18992,14 +19489,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/playbooks').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/playbooks')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -19131,11 +19632,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -19283,11 +19791,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:export').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}:export')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -19442,11 +19957,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -19597,14 +20119,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/playbooks:import').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/playbooks:import')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -19748,14 +20274,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/playbooks').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/playbooks')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -19939,11 +20469,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -20197,14 +20734,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/examples').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/examples')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -20337,11 +20878,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -20493,11 +21041,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -20648,14 +21203,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/examples').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/examples')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -20828,11 +21387,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -21056,14 +21622,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/versions').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/versions')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -21196,11 +21766,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -21346,11 +21923,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -21499,14 +22083,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/versions').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/versions')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -21655,14 +22243,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:restore').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+name}:restore')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -21882,14 +22474,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.session !== undefined && params.session !== null) {
+        validateMultiSegment('session', String(params.session));
+        params.session = encodeWithoutSlashes(String(params.session));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+session}:detectIntent').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+session}:detectIntent')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -22047,14 +22643,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.session !== undefined && params.session !== null) {
+        validateMultiSegment('session', String(params.session));
+        params.session = encodeWithoutSlashes(String(params.session));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+session}:fulfillIntent').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+session}:fulfillIntent')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -22212,14 +22812,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.session !== undefined && params.session !== null) {
+        validateMultiSegment('session', String(params.session));
+        params.session = encodeWithoutSlashes(String(params.session));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+session}:matchIntent').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+session}:matchIntent')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -22381,13 +22985,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.session !== undefined && params.session !== null) {
+        validateMultiSegment('session', String(params.session));
+        params.session = encodeWithoutSlashes(String(params.session));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/v3/{+session}:serverStreamingDetectIntent'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+session}:serverStreamingDetectIntent')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -22543,14 +23152,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.session !== undefined && params.session !== null) {
+        validateMultiSegment('session', String(params.session));
+        params.session = encodeWithoutSlashes(String(params.session));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+session}:submitAnswerFeedback').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+session}:submitAnswerFeedback')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -22769,14 +23382,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/entityTypes').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/entityTypes')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -22909,11 +23526,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -23056,11 +23680,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -23209,14 +23840,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/entityTypes').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/entityTypes')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -23373,11 +24008,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -23583,14 +24225,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/testCases:batchDelete').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/testCases:batchDelete')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -23738,14 +24384,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/testCases:batchRun').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/testCases:batchRun')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -23891,14 +24541,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.agent !== undefined && params.agent !== null) {
+        validateMultiSegment('agent', String(params.agent));
+        params.agent = encodeWithoutSlashes(String(params.agent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+agent}/testCases:calculateCoverage').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+agent}/testCases:calculateCoverage')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -24062,14 +24716,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/testCases').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/testCases')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -24220,14 +24878,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/testCases:export').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/testCases:export')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -24373,11 +25035,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -24527,14 +25196,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/testCases:import').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/testCases:import')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -24680,14 +25353,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/testCases').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/testCases')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -24853,11 +25530,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -25005,11 +25689,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:run').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}:run')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -25276,11 +25967,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -25432,14 +26130,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/results').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/results')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -25632,14 +26334,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/tools').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/tools')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -25772,11 +26478,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -25917,11 +26630,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -26067,14 +26787,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/tools').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/tools')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -26233,11 +26957,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -26460,14 +27191,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/versions').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/versions')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -26601,11 +27336,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -26749,11 +27491,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -26901,14 +27650,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/versions').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/versions')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -27058,14 +27811,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:restore').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+name}:restore')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -27282,14 +28039,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/transitionRouteGroups').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/transitionRouteGroups')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -27424,11 +28185,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -27573,11 +28341,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -27727,14 +28502,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/transitionRouteGroups').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/transitionRouteGroups')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -27893,11 +28672,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -28137,14 +28923,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/webhooks').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/webhooks')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -28278,11 +29068,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -28426,11 +29223,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -28576,14 +29380,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/webhooks').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/webhooks')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -28744,11 +29552,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -28943,11 +29758,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:cancel').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}:cancel')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -29085,11 +29907,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -29238,14 +30067,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}/operations').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+name}/operations')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -29457,14 +30290,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/securitySettings').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/securitySettings')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -29596,11 +30433,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -29749,11 +30593,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -29899,14 +30750,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.parent !== undefined && params.parent !== null) {
+        validateMultiSegment('parent', String(params.parent));
+        params.parent = encodeWithoutSlashes(String(params.parent));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+parent}/securitySettings').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+parent}/securitySettings')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -30078,11 +30933,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -30273,11 +31135,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}:cancel').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}:cancel')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -30415,11 +31284,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/v3/{+name}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -30568,14 +31444,18 @@ export namespace dialogflow_v3 {
         options = {};
       }
 
+      if (params.name !== undefined && params.name !== null) {
+        validateMultiSegment('name', String(params.name));
+        params.name = encodeWithoutSlashes(String(params.name));
+      }
+
       const rootUrl = options.rootUrl || 'https://dialogflow.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/v3/{+name}/operations').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/v3/{+name}/operations')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
diff --git a/src/apis/drive/v2.ts b/src/apis/drive/v2.ts
index dfd61d8aec6..c871f30b27c 100644
--- a/src/apis/drive/v2.ts
+++ b/src/apis/drive/v2.ts
@@ -34,6 +34,12 @@ import {
   APIRequestContext,
 } from 'googleapis-common';
 import {Readable} from 'stream';
+import {
+  validateSingleSegment,
+  validateMultiSegment,
+  encodeWithSlashes,
+  encodeWithoutSlashes,
+} from '../../transcoding';
 
 export namespace drive_v2 {
   export interface Options extends GlobalOptions {
@@ -2196,7 +2202,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/about').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/about')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -2377,14 +2385,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.appId !== undefined && params.appId !== null) {
+        validateSingleSegment('appId', String(params.appId));
+        params.appId = encodeWithSlashes(String(params.appId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/apps/{appId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/apps/{appId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -2524,7 +2536,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/apps').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/apps')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -2710,14 +2724,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.changeId !== undefined && params.changeId !== null) {
+        validateSingleSegment('changeId', String(params.changeId));
+        params.changeId = encodeWithSlashes(String(params.changeId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/changes/{changeId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/changes/{changeId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -2870,10 +2888,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/changes/startPageToken').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/changes/startPageToken')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -3050,7 +3067,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/changes').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/changes')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -3246,10 +3265,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/changes/watch').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/changes/watch')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -3576,10 +3594,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/channels/stop').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/channels/stop')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -3722,13 +3739,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.childId !== undefined && params.childId !== null) {
+        validateSingleSegment('childId', String(params.childId));
+        params.childId = encodeWithSlashes(String(params.childId));
+      }
+      if (params.folderId !== undefined && params.folderId !== null) {
+        validateSingleSegment('folderId', String(params.folderId));
+        params.folderId = encodeWithSlashes(String(params.folderId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{folderId}/children/{childId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{folderId}/children/{childId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -3871,13 +3897,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.childId !== undefined && params.childId !== null) {
+        validateSingleSegment('childId', String(params.childId));
+        params.childId = encodeWithSlashes(String(params.childId));
+      }
+      if (params.folderId !== undefined && params.folderId !== null) {
+        validateSingleSegment('folderId', String(params.folderId));
+        params.folderId = encodeWithSlashes(String(params.folderId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{folderId}/children/{childId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{folderId}/children/{childId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -4030,14 +4065,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.folderId !== undefined && params.folderId !== null) {
+        validateSingleSegment('folderId', String(params.folderId));
+        params.folderId = encodeWithSlashes(String(params.folderId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{folderId}/children').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{folderId}/children')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -4187,14 +4226,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.folderId !== undefined && params.folderId !== null) {
+        validateSingleSegment('folderId', String(params.folderId));
+        params.folderId = encodeWithSlashes(String(params.folderId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{folderId}/children').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{folderId}/children')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -4398,13 +4441,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.commentId !== undefined && params.commentId !== null) {
+        validateSingleSegment('commentId', String(params.commentId));
+        params.commentId = encodeWithSlashes(String(params.commentId));
+      }
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/comments/{commentId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/comments/{commentId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -4555,13 +4607,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.commentId !== undefined && params.commentId !== null) {
+        validateSingleSegment('commentId', String(params.commentId));
+        params.commentId = encodeWithSlashes(String(params.commentId));
+      }
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/comments/{commentId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/comments/{commentId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -4728,14 +4789,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/comments').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/comments')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -4881,14 +4946,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/comments').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/comments')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -5057,13 +5126,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.commentId !== undefined && params.commentId !== null) {
+        validateSingleSegment('commentId', String(params.commentId));
+        params.commentId = encodeWithSlashes(String(params.commentId));
+      }
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/comments/{commentId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/comments/{commentId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -5232,13 +5310,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.commentId !== undefined && params.commentId !== null) {
+        validateSingleSegment('commentId', String(params.commentId));
+        params.commentId = encodeWithSlashes(String(params.commentId));
+      }
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/comments/{commentId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/comments/{commentId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PUT',
             apiVersion: '',
           },
@@ -5459,14 +5546,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.driveId !== undefined && params.driveId !== null) {
+        validateSingleSegment('driveId', String(params.driveId));
+        params.driveId = encodeWithSlashes(String(params.driveId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/drives/{driveId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/drives/{driveId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -5610,14 +5701,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.driveId !== undefined && params.driveId !== null) {
+        validateSingleSegment('driveId', String(params.driveId));
+        params.driveId = encodeWithSlashes(String(params.driveId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/drives/{driveId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/drives/{driveId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -5756,14 +5851,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.driveId !== undefined && params.driveId !== null) {
+        validateSingleSegment('driveId', String(params.driveId));
+        params.driveId = encodeWithSlashes(String(params.driveId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/drives/{driveId}/hide').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/drives/{driveId}/hide')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -5925,7 +6024,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/drives').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/drives')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -6068,7 +6169,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/drives').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/drives')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -6207,14 +6310,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.driveId !== undefined && params.driveId !== null) {
+        validateSingleSegment('driveId', String(params.driveId));
+        params.driveId = encodeWithSlashes(String(params.driveId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/drives/{driveId}/unhide').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/drives/{driveId}/unhide')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -6374,14 +6481,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.driveId !== undefined && params.driveId !== null) {
+        validateSingleSegment('driveId', String(params.driveId));
+        params.driveId = encodeWithSlashes(String(params.driveId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/drives/{driveId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/drives/{driveId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PUT',
             apiVersion: '',
           },
@@ -6787,14 +6898,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/copy').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/copy')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -6926,14 +7041,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -7061,10 +7180,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/trash').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/trash')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -7193,14 +7311,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/export').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/export')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -7343,10 +7465,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/generateCseToken').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/generateCseToken')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -7490,10 +7611,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/generateIds').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/generateIds')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -7722,14 +7842,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -8054,17 +8178,18 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
           options
         ),
         params,
-        mediaUrl: (rootUrl + '/upload/drive/v2/files').replace(
-          /([^:]\/)\/+/g,
-          '$1'
-        ),
+        mediaUrl: (rootUrl + '/upload/drive/v2/files')
+          .replace(/([^:]\/)\/+/g, '$1')
+          .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
         requiredParams: [],
         pathParams: [],
         context: this.context,
@@ -8236,7 +8361,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files').replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -8377,14 +8504,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/listLabels').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/listLabels')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -8531,14 +8662,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/modifyLabels').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/modifyLabels')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -8869,14 +9004,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -9094,14 +9233,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/touch').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/touch')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -9318,14 +9461,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/trash').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/trash')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -9542,14 +9689,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/untrash').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/untrash')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -9884,24 +10035,27 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PUT',
             apiVersion: '',
           },
           options
         ),
         params,
-        mediaUrl: (rootUrl + '/upload/drive/v2/files/{fileId}').replace(
-          /([^:]\/)\/+/g,
-          '$1'
-        ),
+        mediaUrl: (rootUrl + '/upload/drive/v2/files/{fileId}')
+          .replace(/([^:]\/)\/+/g, '$1')
+          .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
         requiredParams: ['fileId'],
         pathParams: ['fileId'],
         context: this.context,
@@ -10074,14 +10228,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/watch').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/watch')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -10832,13 +10990,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.parentId !== undefined && params.parentId !== null) {
+        validateSingleSegment('parentId', String(params.parentId));
+        params.parentId = encodeWithSlashes(String(params.parentId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/parents/{parentId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/parents/{parentId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -10982,13 +11149,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.parentId !== undefined && params.parentId !== null) {
+        validateSingleSegment('parentId', String(params.parentId));
+        params.parentId = encodeWithSlashes(String(params.parentId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/parents/{parentId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/parents/{parentId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -11143,14 +11319,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/parents').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/parents')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -11290,14 +11470,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/parents').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/parents')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -11494,13 +11678,24 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.permissionId !== undefined && params.permissionId !== null) {
+        validateSingleSegment('permissionId', String(params.permissionId));
+        params.permissionId = encodeWithSlashes(String(params.permissionId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
             url: (
               rootUrl + '/drive/v2/files/{fileId}/permissions/{permissionId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            )
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -11664,13 +11859,24 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.permissionId !== undefined && params.permissionId !== null) {
+        validateSingleSegment('permissionId', String(params.permissionId));
+        params.permissionId = encodeWithSlashes(String(params.permissionId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
             url: (
               rootUrl + '/drive/v2/files/{fileId}/permissions/{permissionId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            )
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -11810,14 +12016,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.email !== undefined && params.email !== null) {
+        validateSingleSegment('email', String(params.email));
+        params.email = encodeWithSlashes(String(params.email));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/permissionIds/{email}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/permissionIds/{email}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -12013,14 +12223,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/permissions').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/permissions')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -12173,14 +12387,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/permissions').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/permissions')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -12374,13 +12592,24 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.permissionId !== undefined && params.permissionId !== null) {
+        validateSingleSegment('permissionId', String(params.permissionId));
+        params.permissionId = encodeWithSlashes(String(params.permissionId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
             url: (
               rootUrl + '/drive/v2/files/{fileId}/permissions/{permissionId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            )
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -12574,13 +12803,24 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.permissionId !== undefined && params.permissionId !== null) {
+        validateSingleSegment('permissionId', String(params.permissionId));
+        params.permissionId = encodeWithSlashes(String(params.permissionId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
             url: (
               rootUrl + '/drive/v2/files/{fileId}/permissions/{permissionId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            )
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PUT',
             apiVersion: '',
           },
@@ -12925,13 +13165,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.propertyKey !== undefined && params.propertyKey !== null) {
+        validateSingleSegment('propertyKey', String(params.propertyKey));
+        params.propertyKey = encodeWithSlashes(String(params.propertyKey));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/properties/{propertyKey}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/properties/{propertyKey}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -13077,13 +13326,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.propertyKey !== undefined && params.propertyKey !== null) {
+        validateSingleSegment('propertyKey', String(params.propertyKey));
+        params.propertyKey = encodeWithSlashes(String(params.propertyKey));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/properties/{propertyKey}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/properties/{propertyKey}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -13235,14 +13493,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/properties').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/properties')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -13383,14 +13645,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/properties').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/properties')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -13545,13 +13811,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.propertyKey !== undefined && params.propertyKey !== null) {
+        validateSingleSegment('propertyKey', String(params.propertyKey));
+        params.propertyKey = encodeWithSlashes(String(params.propertyKey));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/properties/{propertyKey}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/properties/{propertyKey}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -13707,13 +13982,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.propertyKey !== undefined && params.propertyKey !== null) {
+        validateSingleSegment('propertyKey', String(params.propertyKey));
+        params.propertyKey = encodeWithSlashes(String(params.propertyKey));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/properties/{propertyKey}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/properties/{propertyKey}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PUT',
             apiVersion: '',
           },
@@ -13933,6 +14217,19 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.commentId !== undefined && params.commentId !== null) {
+        validateSingleSegment('commentId', String(params.commentId));
+        params.commentId = encodeWithSlashes(String(params.commentId));
+      }
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.replyId !== undefined && params.replyId !== null) {
+        validateSingleSegment('replyId', String(params.replyId));
+        params.replyId = encodeWithSlashes(String(params.replyId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
@@ -13940,7 +14237,9 @@ export namespace drive_v2 {
             url: (
               rootUrl +
               '/drive/v2/files/{fileId}/comments/{commentId}/replies/{replyId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            )
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -14088,6 +14387,19 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.commentId !== undefined && params.commentId !== null) {
+        validateSingleSegment('commentId', String(params.commentId));
+        params.commentId = encodeWithSlashes(String(params.commentId));
+      }
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.replyId !== undefined && params.replyId !== null) {
+        validateSingleSegment('replyId', String(params.replyId));
+        params.replyId = encodeWithSlashes(String(params.replyId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
@@ -14095,7 +14407,9 @@ export namespace drive_v2 {
             url: (
               rootUrl +
               '/drive/v2/files/{fileId}/comments/{commentId}/replies/{replyId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            )
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -14253,13 +14567,24 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.commentId !== undefined && params.commentId !== null) {
+        validateSingleSegment('commentId', String(params.commentId));
+        params.commentId = encodeWithSlashes(String(params.commentId));
+      }
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
             url: (
               rootUrl + '/drive/v2/files/{fileId}/comments/{commentId}/replies'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            )
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -14405,13 +14730,24 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.commentId !== undefined && params.commentId !== null) {
+        validateSingleSegment('commentId', String(params.commentId));
+        params.commentId = encodeWithSlashes(String(params.commentId));
+      }
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
             url: (
               rootUrl + '/drive/v2/files/{fileId}/comments/{commentId}/replies'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            )
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -14571,6 +14907,19 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.commentId !== undefined && params.commentId !== null) {
+        validateSingleSegment('commentId', String(params.commentId));
+        params.commentId = encodeWithSlashes(String(params.commentId));
+      }
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.replyId !== undefined && params.replyId !== null) {
+        validateSingleSegment('replyId', String(params.replyId));
+        params.replyId = encodeWithSlashes(String(params.replyId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
@@ -14578,7 +14927,9 @@ export namespace drive_v2 {
             url: (
               rootUrl +
               '/drive/v2/files/{fileId}/comments/{commentId}/replies/{replyId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            )
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -14738,6 +15089,19 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.commentId !== undefined && params.commentId !== null) {
+        validateSingleSegment('commentId', String(params.commentId));
+        params.commentId = encodeWithSlashes(String(params.commentId));
+      }
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.replyId !== undefined && params.replyId !== null) {
+        validateSingleSegment('replyId', String(params.replyId));
+        params.replyId = encodeWithSlashes(String(params.replyId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
@@ -14745,7 +15109,9 @@ export namespace drive_v2 {
             url: (
               rootUrl +
               '/drive/v2/files/{fileId}/comments/{commentId}/replies/{replyId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            )
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PUT',
             apiVersion: '',
           },
@@ -14988,13 +15354,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.revisionId !== undefined && params.revisionId !== null) {
+        validateSingleSegment('revisionId', String(params.revisionId));
+        params.revisionId = encodeWithSlashes(String(params.revisionId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/revisions/{revisionId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/revisions/{revisionId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -15150,13 +15525,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.revisionId !== undefined && params.revisionId !== null) {
+        validateSingleSegment('revisionId', String(params.revisionId));
+        params.revisionId = encodeWithSlashes(String(params.revisionId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/revisions/{revisionId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/revisions/{revisionId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -15302,14 +15686,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/files/{fileId}/revisions').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/files/{fileId}/revisions')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -15485,13 +15873,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.revisionId !== undefined && params.revisionId !== null) {
+        validateSingleSegment('revisionId', String(params.revisionId));
+        params.revisionId = encodeWithSlashes(String(params.revisionId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/revisions/{revisionId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/revisions/{revisionId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PATCH',
             apiVersion: '',
           },
@@ -15667,13 +16064,22 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.fileId !== undefined && params.fileId !== null) {
+        validateSingleSegment('fileId', String(params.fileId));
+        params.fileId = encodeWithSlashes(String(params.fileId));
+      }
+      if (params.revisionId !== undefined && params.revisionId !== null) {
+        validateSingleSegment('revisionId', String(params.revisionId));
+        params.revisionId = encodeWithSlashes(String(params.revisionId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (
-              rootUrl + '/drive/v2/files/{fileId}/revisions/{revisionId}'
-            ).replace(/([^:]\/)\/+/g, '$1'),
+            url: (rootUrl + '/drive/v2/files/{fileId}/revisions/{revisionId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PUT',
             apiVersion: '',
           },
@@ -15868,14 +16274,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.teamDriveId !== undefined && params.teamDriveId !== null) {
+        validateSingleSegment('teamDriveId', String(params.teamDriveId));
+        params.teamDriveId = encodeWithSlashes(String(params.teamDriveId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/teamdrives/{teamDriveId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/teamdrives/{teamDriveId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'DELETE',
             apiVersion: '',
           },
@@ -16018,14 +16428,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.teamDriveId !== undefined && params.teamDriveId !== null) {
+        validateSingleSegment('teamDriveId', String(params.teamDriveId));
+        params.teamDriveId = encodeWithSlashes(String(params.teamDriveId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/teamdrives/{teamDriveId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/teamdrives/{teamDriveId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -16186,10 +16600,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/teamdrives').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/teamdrives')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'POST',
             apiVersion: '',
           },
@@ -16333,10 +16746,9 @@ export namespace drive_v2 {
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/teamdrives').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/teamdrives')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'GET',
             apiVersion: '',
           },
@@ -16495,14 +16907,18 @@ export namespace drive_v2 {
         options = {};
       }
 
+      if (params.teamDriveId !== undefined && params.teamDriveId !== null) {
+        validateSingleSegment('teamDriveId', String(params.teamDriveId));
+        params.teamDriveId = encodeWithSlashes(String(params.teamDriveId));
+      }
+
       const rootUrl = options.rootUrl || 'https://www.googleapis.com/';
       const parameters = {
         options: Object.assign(
           {
-            url: (rootUrl + '/drive/v2/teamdrives/{teamDriveId}').replace(
-              /([^:]\/)\/+/g,
-              '$1'
-            ),
+            url: (rootUrl + '/drive/v2/teamdrives/{teamDriveId}')
+              .replace(/([^:]\/)\/+/g, '$1')
+              .replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
             method: 'PUT',
             apiVersion: '',
           },
diff --git a/src/generator/filters.ts b/src/generator/filters.ts
index 1eeb4f19fea..72d0d9969e7 100644
--- a/src/generator/filters.ts
+++ b/src/generator/filters.ts
@@ -118,6 +118,21 @@ export function hasResourceParam(method: SchemaMethod): boolean {
   return !!method.parameters && !!method.parameters['resource'];
 }
 
+export function isReservedParam(
+  p: {reserved?: boolean},
+  pname: string,
+  mpath?: string
+): boolean {
+  if (p && p.reserved) {
+    return true;
+  }
+  if (!mpath) {
+    return false;
+  }
+  const regex = new RegExp(`\\{\\+${pname}(?:[\\}:/=]|$)`);
+  return regex.test(mpath);
+}
+
 const RESERVED_PARAMS = ['resource', 'media', 'auth'];
 
 /**
diff --git a/src/generator/generator.ts b/src/generator/generator.ts
index e9daded8679..1c95543a05a 100644
--- a/src/generator/generator.ts
+++ b/src/generator/generator.ts
@@ -73,6 +73,7 @@ export class Generator {
     this.env.addFilter('getPathParams', filters.getPathParams);
     this.env.addFilter('getSafeParamName', filters.getSafeParamName);
     this.env.addFilter('hasResourceParam', filters.hasResourceParam);
+    this.env.addFilter('isReservedParam', filters.isReservedParam);
   }
 
   /**
diff --git a/src/generator/templates/api-endpoint.njk b/src/generator/templates/api-endpoint.njk
index e9c43492906..ea633d67a56 100644
--- a/src/generator/templates/api-endpoint.njk
+++ b/src/generator/templates/api-endpoint.njk
@@ -27,6 +27,12 @@ import {
   APIRequestContext,
 } from 'googleapis-common';
 import {Readable} from 'stream';
+import {
+  validateSingleSegment,
+  validateMultiSegment,
+  encodeWithSlashes,
+  encodeWithoutSlashes,
+} from '../../transcoding';
 
 export namespace {{api.name}}_{{api.version|replace('\.', '_')}} {
 
diff --git a/src/generator/templates/method-partial.njk b/src/generator/templates/method-partial.njk
index 706b591f6d4..c3b844624a9 100644
--- a/src/generator/templates/method-partial.njk
+++ b/src/generator/templates/method-partial.njk
@@ -47,15 +47,33 @@
     options = {};
   }
 
+  {% if m.parameters %}
+  {% for pname, p in m.parameters|dictsort %}
+  {% if p.location == 'path' %}
+  {% set safePName = pname|getSafeParamName %}
+  {% set isReserved = p|isReservedParam(pname, m.path) %}
+  if (params.{{ safePName }} !== undefined && params.{{ safePName }} !== null) {
+    {% if isReserved %}
+    validateMultiSegment('{{ pname }}', String(params.{{ safePName }}));
+    params.{{ safePName }} = encodeWithoutSlashes(String(params.{{ safePName }}));
+    {% else %}
+    validateSingleSegment('{{ pname }}', String(params.{{ safePName }}));
+    params.{{ safePName }} = encodeWithSlashes(String(params.{{ safePName }}));
+    {% endif %}
+  }
+  {% endif %}
+  {% endfor %}
+  {% endif %}
+
   const rootUrl = options.rootUrl || {{ rootApi.rootUrl|buildurl|safe }};
   const parameters = {
     options: Object.assign({
-      url: (rootUrl + {{ ('/' + rootApi.servicePath + m.path)|buildurl|safe }}).replace(/([^:]\/)\/+/g, '$1'),
+      url: (rootUrl + {{ ('/' + rootApi.servicePath + m.path)|buildurl|safe }}).replace(/([^:]\/)\/+/g, '$1').replace(/\{([^+:][^}]*)\}/g, '{+$1}'),
       method: '{{ m.httpMethod }}',
       apiVersion: '{{ m.apiVersion }}'
     }, options),
     params,
-    {% if m.mediaUpload.protocols.simple.path %}mediaUrl: (rootUrl + {{ ('/' + m.mediaUpload.protocols.simple.path)|buildurl|safe }}).replace(/([^:]\/)\/+/g, '$1'),{% endif %}
+    {% if m.mediaUpload.protocols.simple.path %}mediaUrl: (rootUrl + {{ ('/' + m.mediaUpload.protocols.simple.path)|buildurl|safe }}).replace(/([^:]\/)\/+/g, '$1').replace(/\{([^+:][^}]*)\}/g, '{+$1}'),{% endif %}
     requiredParams: [{% if m.parameterOrder.length %}'{{ m.parameterOrder|join("', '")|safe }}'{% endif %}],
     pathParams: [{% if pathParams.length %}'{{ pathParams|join("', '")|safe }}'{% endif %}],
     context: this.context,
diff --git a/src/index.ts b/src/index.ts
index a593828fb3d..1b0c2603878 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -16,6 +16,7 @@ import {GoogleApis} from './googleapis';
 const google = new GoogleApis();
 export {google, GoogleApis};
 export * as Common from 'googleapis-common';
+export * from './transcoding';
 export * as Auth from 'google-auth-library';
 
 export {abusiveexperiencereport_v1} from './apis/abusiveexperiencereport/v1';
diff --git a/src/transcoding.ts b/src/transcoding.ts
new file mode 100644
index 00000000000..0beb47e04d0
--- /dev/null
+++ b/src/transcoding.ts
@@ -0,0 +1,65 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Validates a single path segment matched by a single wildcard (*) or {param}.
+// Checks that the segment is not exactly '.' or '..' (directory traversal indicators).
+export function validateSingleSegment(
+  propertyName: string,
+  value: string
+): void {
+  if (value === '.' || value === '..') {
+    throw new Error(`Invalid value ${value} for ${propertyName}`);
+  }
+}
+
+// Validates a multi-segment path matched by a double wildcard (**) or {+param}.
+// Splitting by slash, it checks that no individual segment is exactly '.' or '..'.
+// This segment-by-segment check prevents directory traversal while allowing
+// legitimate resource names containing dots (e.g., domain-scoped project IDs).
+export function validateMultiSegment(
+  propertyName: string,
+  value: string
+): void {
+  if (value) {
+    const segments = value.split('/');
+    if (segments.some(segment => segment === '.' || segment === '..')) {
+      throw new Error(
+        `Value for ${propertyName} must not contain segments that are exactly . or ..`
+      );
+    }
+  }
+}
+
+// Strictly percent-encodes a character to comply with RFC 3986.
+// This is necessary because encodeURIComponent natively encodes URL-unsafe
+// characters like ?, #, $, &, +, etc., but preserves !, ', (, ), and *.
+// To ensure strict compliance, we manually encode those preserved characters.
+export function strictEncodeURIComponent(str: string): string {
+  return encodeURIComponent(str).replace(
+    /[!'()*]/g,
+    character => '%' + character.charCodeAt(0).toString(16).toUpperCase()
+  );
+}
+
+export function encodeWithSlashes(str: string): string {
+  return [...str]
+    .map(c => (c.match(/[-_.~0-9a-zA-Z]/) ? c : strictEncodeURIComponent(c)))
+    .join('');
+}
+
+export function encodeWithoutSlashes(str: string): string {
+  return [...str]
+    .map(c => (c.match(/[-_.~0-9a-zA-Z/]/) ? c : strictEncodeURIComponent(c)))
+    .join('');
+}
diff --git a/test/test.path.ts b/test/test.path.ts
index d8201868bbc..f60fbf36af2 100644
--- a/test/test.path.ts
+++ b/test/test.path.ts
@@ -232,6 +232,87 @@ describe('Path params', () => {
     );
   });
 
+  it('should throw an error for single-segment path traversal containing "." or ".."', () => {
+    assert.throws(() => {
+      localDrive.files.get({fileId: '.'}, Utils.noop);
+    }, /Invalid value \. for fileId/);
+
+    assert.throws(() => {
+      localDrive.files.get({fileId: '..'}, Utils.noop);
+    }, /Invalid value \.\. for fileId/);
+  });
+
+  it('should throw an error for multi-segment path traversal containing "." or ".." segments', () => {
+    const google = new GoogleApis();
+    const dialogflow = google.dialogflow('v3');
+
+    assert.throws(() => {
+      dialogflow.projects.locations.agents.sessions.detectIntent(
+        {
+          session:
+            'projects/p/locations/l/agents/a/sessions/agents/../subagent',
+        },
+        Utils.noop
+      );
+    }, /Value for session must not contain segments that are exactly \. or \.\./);
+
+    assert.throws(() => {
+      dialogflow.projects.locations.agents.sessions.detectIntent(
+        {
+          session:
+            'projects/p/locations/l/agents/a/sessions/agents/./subagent',
+        },
+        Utils.noop
+      );
+    }, /Value for session must not contain segments that are exactly \. or \.\./);
+  });
+
+  it('should protect against query parameter and fragment injection by percent-encoding in path parameters', done => {
+    const google = new GoogleApis();
+    const dialogflow = google.dialogflow('v3');
+    const p =
+      '/v3/projects/p/locations/l/agents/a/sessions/my-session%3F%24httpMethod%3DDELETE%23:detectIntent';
+
+    nock('https://dialogflow.googleapis.com').post(p).reply(200, {});
+
+    dialogflow.projects.locations.agents.sessions.detectIntent(
+      {
+        session:
+          'projects/p/locations/l/agents/a/sessions/my-session?$httpMethod=DELETE#',
+      },
+      (err: Error | null, res?: GaxiosResponseWithHTTP2 | null) => {
+        if (err) {
+          return done(err);
+        }
+        assert.ok(res?.config.url?.toString().endsWith(p));
+        done();
+      }
+    );
+  });
+
+  it('should strictly percent-encode reserved characters while preserving unreserved characters and slashes in reserved parameters', done => {
+    const google = new GoogleApis();
+    const dialogflow = google.dialogflow('v3');
+    const p =
+      '/v3/projects/p/locations/l/agents/a/sessions/%20%21%40%24%26%27%28%29%2A%2B%2C%3B%3D%3A%25:detectIntent';
+
+    nock('https://dialogflow.googleapis.com').post(p).reply(200, {});
+
+    dialogflow.projects.locations.agents.sessions.detectIntent(
+      {
+        session:
+          'projects/p/locations/l/agents/a/sessions/ !@$&\'()*+,;=:%',
+      },
+      (err: Error | null, res?: GaxiosResponseWithHTTP2 | null) => {
+        if (err) {
+          return done(err);
+        }
+        assert.ok(res?.config.url?.toString().endsWith(p));
+        done();
+      }
+    );
+  });
+
   after(() => {
     nock.cleanAll();
   });