chore: test TAP failure when adding a new field to Part

PiperOrigin-RevId: 868543245

Author: jaycee-li

src/main/java/com/google/genai/Batches.java

@@ -1659,6 +1659,13 @@ ObjectNode partToMldev(JsonNode fromObject, ObjectNode parentObject) {
           Common.getValueByPath(fromObject, new String[] {"mediaResolution"}));
     }
 
+    if (Common.getValueByPath(fromObject, new String[] {"testJava"}) != null) {
+      Common.setValueByPath(
+          toObject,
+          new String[] {"testJava"},
+          Common.getValueByPath(fromObject, new String[] {"testJava"}));
+    }
+
     if (Common.getValueByPath(fromObject, new String[] {"codeExecutionResult"}) != null) {
       Common.setValueByPath(
           toObject,

src/main/java/com/google/genai/Caches.java

@@ -693,6 +693,13 @@ ObjectNode partToMldev(JsonNode fromObject, ObjectNode parentObject) {
           Common.getValueByPath(fromObject, new String[] {"mediaResolution"}));
     }
 
+    if (Common.getValueByPath(fromObject, new String[] {"testJava"}) != null) {
+      Common.setValueByPath(
+          toObject,
+          new String[] {"testJava"},
+          Common.getValueByPath(fromObject, new String[] {"testJava"}));
+    }
+
     if (Common.getValueByPath(fromObject, new String[] {"codeExecutionResult"}) != null) {
       Common.setValueByPath(
           toObject,

src/main/java/com/google/genai/LiveConverters.java

@@ -1457,6 +1457,13 @@ ObjectNode partToMldev(JsonNode fromObject, ObjectNode parentObject) {
           Common.getValueByPath(fromObject, new String[] {"mediaResolution"}));
     }
 
+    if (Common.getValueByPath(fromObject, new String[] {"testJava"}) != null) {
+      Common.setValueByPath(
+          toObject,
+          new String[] {"testJava"},
+          Common.getValueByPath(fromObject, new String[] {"testJava"}));
+    }
+
     if (Common.getValueByPath(fromObject, new String[] {"codeExecutionResult"}) != null) {
       Common.setValueByPath(
           toObject,

src/main/java/com/google/genai/Models.java

@@ -3772,6 +3772,13 @@ ObjectNode partToMldev(JsonNode fromObject, ObjectNode parentObject, JsonNode ro
           Common.getValueByPath(fromObject, new String[] {"mediaResolution"}));
     }
 
+    if (Common.getValueByPath(fromObject, new String[] {"testJava"}) != null) {
+      Common.setValueByPath(
+          toObject,
+          new String[] {"testJava"},
+          Common.getValueByPath(fromObject, new String[] {"testJava"}));
+    }
+
     if (Common.getValueByPath(fromObject, new String[] {"codeExecutionResult"}) != null) {
       Common.setValueByPath(
           toObject,

src/main/java/com/google/genai/TokensConverters.java

@@ -438,6 +438,13 @@ ObjectNode partToMldev(JsonNode fromObject, ObjectNode parentObject) {
           Common.getValueByPath(fromObject, new String[] {"mediaResolution"}));
     }
 
+    if (Common.getValueByPath(fromObject, new String[] {"testJava"}) != null) {
+      Common.setValueByPath(
+          toObject,
+          new String[] {"testJava"},
+          Common.getValueByPath(fromObject, new String[] {"testJava"}));
+    }
+
     if (Common.getValueByPath(fromObject, new String[] {"codeExecutionResult"}) != null) {
       Common.setValueByPath(
           toObject,

src/main/java/com/google/genai/types/Part.java

@@ -40,6 +40,10 @@ public abstract class Part extends JsonSerializable {
   @JsonProperty("mediaResolution")
   public abstract Optional<PartMediaResolution> mediaResolution();
 
+  /** Test field for Java TAP. */
+  @JsonProperty("testJava")
+  public abstract Optional<String> testJava();
+
   /** Optional. Result of executing the [ExecutableCode]. */
   @JsonProperty("codeExecutionResult")
   public abstract Optional<CodeExecutionResult> codeExecutionResult();
@@ -136,6 +140,24 @@ public Builder clearMediaResolution() {
       return mediaResolution(Optional.empty());
     }
 
+    /**
+     * Setter for testJava.
+     *
+     * <p>testJava: Test field for Java TAP.
+     */
+    @JsonProperty("testJava")
+    public abstract Builder testJava(String testJava);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder testJava(Optional<String> testJava);
+
+    /** Clears the value of testJava field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearTestJava() {
+      return testJava(Optional.empty());
+    }
+
     /**
      * Setter for codeExecutionResult.
      *