Fix type linting for extension DSL objects, fixes #1024

Author: Jonathing

src/main/java/net/minecraftforge/gradle/internal/ForgeGradleExtensionImpl.java

@@ -6,6 +6,7 @@
 
 import net.minecraftforge.gradle.ForgeGradleExtension;
 import org.gradle.api.plugins.ExtensionAware;
+import org.gradle.api.reflect.TypeOf;
 
 import javax.inject.Inject;
 
@@ -20,4 +21,9 @@ static void register(
 
     @Inject
     public ForgeGradleExtensionImpl() { }
+
+    @Override
+    public TypeOf<?> getPublicType() {
+        return ForgeGradleExtensionInternal.super.getPublicType();
+    }
 }

src/main/java/net/minecraftforge/gradle/internal/ForgeGradleExtensionInternal.java

@@ -8,8 +8,15 @@
 import org.gradle.api.Action;
 import org.gradle.api.artifacts.repositories.MavenArtifactRepository;
 import org.gradle.api.attributes.Attribute;
+import org.gradle.api.reflect.HasPublicType;
+import org.gradle.api.reflect.TypeOf;
+
+interface ForgeGradleExtensionInternal extends ForgeGradleExtension, HasPublicType {
+    @Override
+    default TypeOf<?> getPublicType() {
+        return TypeOf.typeOf(ForgeGradleExtension.class);
+    }
 
-interface ForgeGradleExtensionInternal extends ForgeGradleExtension {
     Action<MavenArtifactRepository> forgeMaven = repo -> {
         repo.setName("MinecraftForge");
         repo.setUrl(Constants.FORGE_MAVEN);

src/main/java/net/minecraftforge/gradle/internal/MinecraftExtensionImpl.java

@@ -97,6 +97,11 @@ public MinecraftExtensionImpl(ForgeGradlePlugin plugin) {
         this.mavenizerOutput.convention(plugin.localCaches().dir("mavenizer/output").map(this.problems.ensureFileLocation()));
     }
 
+    @Override
+    public TypeOf<?> getPublicType() {
+        return MinecraftExtensionInternal.super.getPublicType();
+    }
+
     @Override
     public Property<MinecraftMappingsInternal> getMappingsProperty() {
         return this.mappings;
@@ -254,6 +259,11 @@ public ForProjectImpl(ForgeGradlePlugin plugin) {
             getProject().afterEvaluate(this::finish);
         }
 
+        @Override
+        public TypeOf<?> getPublicType() {
+            return ForProject.super.getPublicType();
+        }
+
         @Override
         public boolean hasAccessTransformersPlugin() {
             return this.hasAccessTransformersPlugin;

src/main/java/net/minecraftforge/gradle/internal/MinecraftExtensionInternal.java

@@ -9,18 +9,30 @@
 import org.gradle.api.artifacts.repositories.MavenArtifactRepository;
 import org.gradle.api.file.DirectoryProperty;
 import org.gradle.api.provider.Property;
+import org.gradle.api.reflect.HasPublicType;
+import org.gradle.api.reflect.TypeOf;
 import org.jetbrains.annotations.UnmodifiableView;
 
 import java.util.List;
 
-interface MinecraftExtensionInternal extends MinecraftExtension, MinecraftMappingsContainerInternal {
+interface MinecraftExtensionInternal extends MinecraftExtension, HasPublicType, MinecraftMappingsContainerInternal {
+    @Override
+    default TypeOf<?> getPublicType() {
+        return TypeOf.typeOf(MinecraftExtension.class);
+    }
+
     Property<MinecraftMappingsInternal> getMappingsProperty();
 
     DirectoryProperty getMavenizerOutput();
 
     // NOTE: This internal interface does NOT implement MinecraftDependencyInternal as it is not actually a dependency!
     //       The top-level interface implements MinecraftDependency since it acts as a default for all Minecraft dependencies.
     interface ForProject extends MinecraftExtensionForProject, MinecraftExtensionInternal, MinecraftAccessTransformersContainerInternal {
+        @Override
+        default TypeOf<?> getPublicType() {
+            return TypeOf.typeOf(MinecraftExtensionForProject.class);
+        }
+
         @UnmodifiableView List<? extends MavenArtifactRepository> getRepositories();
 
         DirectoryProperty getEclipseOutputDir();