diff --git a/src/main/java/com/google/api/generator/gapic/composer/BUILD.bazel b/src/main/java/com/google/api/generator/gapic/composer/BUILD.bazel
index f90d35bd99..a4500c029d 100644
--- a/src/main/java/com/google/api/generator/gapic/composer/BUILD.bazel
+++ b/src/main/java/com/google/api/generator/gapic/composer/BUILD.bazel
@@ -15,8 +15,10 @@ java_library(
     deps = [
         "//:service_config_java_proto",
         "//src/main/java/com/google/api/generator/engine/ast",
+        "//src/main/java/com/google/api/generator/engine/writer",
         "//src/main/java/com/google/api/generator/gapic:status_java_proto",
         "//src/main/java/com/google/api/generator/gapic/model",
+        "//src/main/java/com/google/api/generator/gapic/composer/samplecode",
         "//src/main/java/com/google/api/generator/gapic/utils",
         "@com_google_api_api_common//jar",
         "@com_google_api_gax_java//gax",
diff --git a/src/main/java/com/google/api/generator/gapic/composer/ServiceClientClassComposer.java b/src/main/java/com/google/api/generator/gapic/composer/ServiceClientClassComposer.java
index 02ff960025..8ed7331724 100644
--- a/src/main/java/com/google/api/generator/gapic/composer/ServiceClientClassComposer.java
+++ b/src/main/java/com/google/api/generator/gapic/composer/ServiceClientClassComposer.java
@@ -119,7 +119,7 @@ public GapicClass generate(Service service, Map<String, Message> messageTypes) {
     ClassDefinition classDef =
         ClassDefinition.builder()
             .setHeaderCommentStatements(
-                ServiceClientCommentComposer.createClassHeaderComments(service))
+                ServiceClientCommentComposer.createClassHeaderComments(service, types))
             .setPackageString(pakkage)
             .setAnnotations(createClassAnnotations(types))
             .setScope(ScopeNode.PUBLIC)
diff --git a/src/main/java/com/google/api/generator/gapic/composer/ServiceClientCommentComposer.java b/src/main/java/com/google/api/generator/gapic/composer/ServiceClientCommentComposer.java
index 1a0f8f2b0f..ba21de8824 100644
--- a/src/main/java/com/google/api/generator/gapic/composer/ServiceClientCommentComposer.java
+++ b/src/main/java/com/google/api/generator/gapic/composer/ServiceClientCommentComposer.java
@@ -17,6 +17,7 @@
 import com.google.api.generator.engine.ast.CommentStatement;
 import com.google.api.generator.engine.ast.JavaDocComment;
 import com.google.api.generator.engine.ast.TypeNode;
+import com.google.api.generator.gapic.composer.samplecode.ServiceClientCommentSampleCodeComposer;
 import com.google.api.generator.gapic.model.Method;
 import com.google.api.generator.gapic.model.MethodArgument;
 import com.google.api.generator.gapic.model.Service;
@@ -25,6 +26,7 @@
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
+import java.util.Map;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
@@ -103,7 +105,8 @@ class ServiceClientCommentComposer {
           "Returns the OperationsClient that can be used to query the status of a long-running"
               + " operation returned by another API method call.");
 
-  static List<CommentStatement> createClassHeaderComments(Service service) {
+  static List<CommentStatement> createClassHeaderComments(
+      Service service, Map<String, TypeNode> types) {
     JavaDocComment.Builder classHeaderJavadocBuilder = JavaDocComment.builder();
     if (service.hasDescription()) {
       classHeaderJavadocBuilder =
@@ -134,9 +137,13 @@ static List<CommentStatement> createClassHeaderComments(Service service) {
             SERVICE_DESCRIPTION_CUSTOMIZE_SUMMARY_PATTERN,
             String.format("%sSettings", JavaStyle.toUpperCamelCase(service.name()))));
     classHeaderJavadocBuilder.addParagraph(SERVICE_DESCRIPTION_CREDENTIALS_SUMMARY_STRING);
-    // TODO(summerji): Add credentials' customization sample code here.
+    classHeaderJavadocBuilder.addSampleCode(
+        ServiceClientCommentSampleCodeComposer.composeClassHeaderCredentialsSampleCode(
+            service, types));
     classHeaderJavadocBuilder.addParagraph(SERVICE_DESCRIPTION_ENDPOINT_SUMMARY_STRING);
-    // TODO(summerji): Add endpoint customization sample code here.
+    classHeaderJavadocBuilder.addSampleCode(
+        ServiceClientCommentSampleCodeComposer.composeClassHeaderEndpointSampleCode(service, types)
+    );
 
     return Arrays.asList(
         CommentComposer.AUTO_GENERATED_CLASS_COMMENT,
diff --git a/src/main/java/com/google/api/generator/gapic/composer/ServiceSettingsClassComposer.java b/src/main/java/com/google/api/generator/gapic/composer/ServiceSettingsClassComposer.java
index 45f625f32f..2c458df5f7 100644
--- a/src/main/java/com/google/api/generator/gapic/composer/ServiceSettingsClassComposer.java
+++ b/src/main/java/com/google/api/generator/gapic/composer/ServiceSettingsClassComposer.java
@@ -54,6 +54,7 @@
 import com.google.api.generator.gapic.model.GapicClass.Kind;
 import com.google.api.generator.gapic.model.Message;
 import com.google.api.generator.gapic.model.Method;
+import com.google.api.generator.gapic.model.Method.Stream;
 import com.google.api.generator.gapic.model.Service;
 import com.google.api.generator.gapic.utils.JavaStyle;
 import com.google.common.base.Preconditions;
@@ -101,7 +102,7 @@ public GapicClass generate(Service service, Map<String, Message> ignore) {
     ClassDefinition classDef =
         ClassDefinition.builder()
             .setPackageString(pakkage)
-            .setHeaderCommentStatements(createClassHeaderComments(service))
+            .setHeaderCommentStatements(createClassHeaderComments(service, types.get(className)))
             .setAnnotations(createClassAnnotations())
             .setScope(ScopeNode.PUBLIC)
             .setName(className)
@@ -119,11 +120,21 @@ public GapicClass generate(Service service, Map<String, Message> ignore) {
     return GapicClass.create(kind, classDef);
   }
 
-  private static List<CommentStatement> createClassHeaderComments(Service service) {
+  private static List<CommentStatement> createClassHeaderComments(
+      Service service, TypeNode classType) {
+    // Pick the first pure unary rpc method, if no such method exist, then pick the first in the
+    // list.
     Optional<Method> methodOpt =
-        service.methods().isEmpty() ? Optional.empty() : Optional.of(service.methods().get(0));
+        service.methods().isEmpty()
+            ? Optional.empty()
+            : Optional.of(
+                service.methods().stream()
+                    .reduce(
+                        (m1, m2) ->
+                            (m1.stream() == Stream.NONE && !m1.hasLro() && !m1.isPaged()) ? m1 : m2)
+                    .get());
     return SettingsCommentComposer.createClassHeaderComments(
-        getClientClassName(service.name()), service.defaultHost(), methodOpt);
+        getClientClassName(service.name()), service.defaultHost(), methodOpt, classType);
   }
 
   private static List<AnnotationNode> createClassAnnotations() {
diff --git a/src/main/java/com/google/api/generator/gapic/composer/ServiceStubSettingsClassComposer.java b/src/main/java/com/google/api/generator/gapic/composer/ServiceStubSettingsClassComposer.java
index c31bec5317..fe65400f8b 100644
--- a/src/main/java/com/google/api/generator/gapic/composer/ServiceStubSettingsClassComposer.java
+++ b/src/main/java/com/google/api/generator/gapic/composer/ServiceStubSettingsClassComposer.java
@@ -78,6 +78,7 @@
 import com.google.api.generator.gapic.model.GapicServiceConfig;
 import com.google.api.generator.gapic.model.Message;
 import com.google.api.generator.gapic.model.Method;
+import com.google.api.generator.gapic.model.Method.Stream;
 import com.google.api.generator.gapic.model.Service;
 import com.google.api.generator.gapic.utils.JavaStyle;
 import com.google.common.base.Preconditions;
@@ -163,7 +164,7 @@ public GapicClass generate(
     ClassDefinition classDef =
         ClassDefinition.builder()
             .setPackageString(pakkage)
-            .setHeaderCommentStatements(createClassHeaderComments(service))
+            .setHeaderCommentStatements(createClassHeaderComments(service, types.get(className)))
             .setAnnotations(createClassAnnotations())
             .setScope(ScopeNode.PUBLIC)
             .setName(className)
@@ -187,11 +188,21 @@ private static List<AnnotationNode> createClassAnnotations() {
             .build());
   }
 
-  private static List<CommentStatement> createClassHeaderComments(Service service) {
+  private static List<CommentStatement> createClassHeaderComments(
+      Service service, TypeNode classType) {
+    // Pick the first pure unary rpc method, if no such method exist, then pick the first in the
+    // list.
     Optional<Method> methodOpt =
-        service.methods().isEmpty() ? Optional.empty() : Optional.of(service.methods().get(0));
+        service.methods().isEmpty()
+            ? Optional.empty()
+            : Optional.of(
+                service.methods().stream()
+                    .reduce(
+                        (m1, m2) ->
+                            (m1.stream() == Stream.NONE && !m1.hasLro() && !m1.isPaged()) ? m1 : m2)
+                    .get());
     return SettingsCommentComposer.createClassHeaderComments(
-        String.format(STUB_PATTERN, service.name()), service.defaultHost(), methodOpt);
+        String.format(STUB_PATTERN, service.name()), service.defaultHost(), methodOpt, classType);
   }
 
   private static TypeNode createExtendsType(Service service, Map<String, TypeNode> types) {
diff --git a/src/main/java/com/google/api/generator/gapic/composer/SettingsCommentComposer.java b/src/main/java/com/google/api/generator/gapic/composer/SettingsCommentComposer.java
index e47822c870..6c637e129f 100644
--- a/src/main/java/com/google/api/generator/gapic/composer/SettingsCommentComposer.java
+++ b/src/main/java/com/google/api/generator/gapic/composer/SettingsCommentComposer.java
@@ -17,6 +17,8 @@
 import com.google.api.generator.engine.ast.CommentStatement;
 import com.google.api.generator.engine.ast.JavaDocComment;
 import com.google.api.generator.engine.ast.LineComment;
+import com.google.api.generator.engine.ast.TypeNode;
+import com.google.api.generator.gapic.composer.samplecode.SettingsCommentSampleCodeComposer;
 import com.google.api.generator.gapic.model.Method;
 import com.google.api.generator.gapic.utils.JavaStyle;
 import com.google.common.base.Preconditions;
@@ -28,6 +30,8 @@
 class SettingsCommentComposer {
   private static final String COLON = ":";
 
+  private static final String CLIENT_CLASS_NAME_PATTERN = "%sClient";
+  private static final String STUB_PATTERN = "%sStub";
   private static final String BUILDER_CLASS_DOC_PATTERN = "Builder for %s.";
   private static final String CALL_SETTINGS_METHOD_DOC_PATTERN =
       "Returns the object with the settings used for calls to %s.";
@@ -102,7 +106,10 @@ static CommentStatement createCallSettingsBuilderGetterComment(String javaMethod
   }
 
   static List<CommentStatement> createClassHeaderComments(
-      String configuredClassName, String defaultHost, Optional<Method> methodOpt) {
+      String configuredClassName,
+      String defaultHost,
+      Optional<Method> methodOpt,
+      TypeNode classType) {
     // Split default address and port.
     int colonIndex = defaultHost.indexOf(COLON);
     Preconditions.checkState(
@@ -127,12 +134,16 @@ static List<CommentStatement> createClassHeaderComments(
             .addParagraph(CLASS_HEADER_BUILDER_DESCRIPTION);
 
     if (methodOpt.isPresent()) {
+      String sampleCode =
+          SettingsCommentSampleCodeComposer.composeSettingClassHeaderSampleCode(
+              methodOpt.get(), classType);
       javaDocCommentBuilder =
-          javaDocCommentBuilder.addParagraph(
-              String.format(
-                  CLASS_HEADER_SAMPLE_CODE_PATTERN,
-                  JavaStyle.toLowerCamelCase(methodOpt.get().name())));
-      // TODO(summerji): Add sample code here.
+          javaDocCommentBuilder
+              .addParagraph(
+                  String.format(
+                      CLASS_HEADER_SAMPLE_CODE_PATTERN,
+                      JavaStyle.toLowerCamelCase(methodOpt.get().name())))
+              .addSampleCode(sampleCode);
     }
 
     return Arrays.asList(
diff --git a/src/main/java/com/google/api/generator/gapic/composer/samplecode/BUILD.bazel b/src/main/java/com/google/api/generator/gapic/composer/samplecode/BUILD.bazel
index bd0cb6f812..9dcaf7ab63 100644
--- a/src/main/java/com/google/api/generator/gapic/composer/samplecode/BUILD.bazel
+++ b/src/main/java/com/google/api/generator/gapic/composer/samplecode/BUILD.bazel
@@ -13,6 +13,11 @@ java_library(
         ":samplecode_files",
     ],
     deps = [
+        "//src/main/java/com/google/api/generator/engine/ast",
+        "//src/main/java/com/google/api/generator/engine/writer",
+        "//src/main/java/com/google/api/generator/gapic/model",
+        "//src/main/java/com/google/api/generator/gapic/utils",
         "@google_java_format_all_deps//jar",
+        "@com_google_api_gax_java//gax",
     ],
 )
diff --git a/src/main/java/com/google/api/generator/gapic/composer/samplecode/ServiceClientCommentSampleCodeComposer.java b/src/main/java/com/google/api/generator/gapic/composer/samplecode/ServiceClientCommentSampleCodeComposer.java
new file mode 100644
index 0000000000..2b63814c0f
--- /dev/null
+++ b/src/main/java/com/google/api/generator/gapic/composer/samplecode/ServiceClientCommentSampleCodeComposer.java
@@ -0,0 +1,161 @@
+// Copyright 2020 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.
+
+package com.google.api.generator.gapic.composer.samplecode;
+
+import com.google.api.gax.core.FixedCredentialsProvider;
+import com.google.api.generator.engine.ast.AssignmentExpr;
+import com.google.api.generator.engine.ast.ConcreteReference;
+import com.google.api.generator.engine.ast.Expr;
+import com.google.api.generator.engine.ast.ExprStatement;
+import com.google.api.generator.engine.ast.MethodInvocationExpr;
+import com.google.api.generator.engine.ast.Statement;
+import com.google.api.generator.engine.ast.StringObjectValue;
+import com.google.api.generator.engine.ast.TypeNode;
+import com.google.api.generator.engine.ast.ValueExpr;
+import com.google.api.generator.engine.ast.Variable;
+import com.google.api.generator.engine.ast.VariableExpr;
+import com.google.api.generator.engine.writer.JavaWriterVisitor;
+import com.google.api.generator.gapic.model.Service;
+import com.google.api.generator.gapic.utils.JavaStyle;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.Map;
+
+public class ServiceClientCommentSampleCodeComposer {
+
+  private static final String SETTINGS_NAME_PATTERN = "%sSettings";
+  private static final String CLASS_NAME_PATTERN = "%sClient";
+
+  public static String composeClassHeaderCredentialsSampleCode(Service service, Map<String, TypeNode> types) {
+    String settingsVarName = JavaStyle.toLowerCamelCase(getSettingsName(service.name()));
+    TypeNode settingsVarType = types.get(getSettingsName(service.name()));
+    VariableExpr settingsVarExpr = VariableExpr.withVariable(
+        Variable.builder()
+            .setName(settingsVarName)
+            .setType(settingsVarType)
+            .build());
+    MethodInvocationExpr newBuilderMethodExpr =
+        MethodInvocationExpr.builder()
+        .setStaticReferenceType(settingsVarType)
+        .setMethodName("newBuilder")
+        .build();
+    TypeNode fixedCredentialProvideType = TypeNode.withReference(
+        ConcreteReference.withClazz(FixedCredentialsProvider.class)
+    );
+    MethodInvocationExpr credentialArgExpr =
+        MethodInvocationExpr.builder()
+        .setStaticReferenceType(fixedCredentialProvideType)
+        .setArguments(ValueExpr.withValue(StringObjectValue.withValue("myCredentials")))
+        .setMethodName("create")
+        .build();
+    MethodInvocationExpr credentialsMethodExpr =
+        MethodInvocationExpr.builder()
+        .setExprReferenceExpr(newBuilderMethodExpr)
+        .setArguments(credentialArgExpr)
+        .setMethodName("setCredentialsProvider")
+        .build();
+    MethodInvocationExpr buildMethodExpr =
+        MethodInvocationExpr.builder()
+            .setExprReferenceExpr(credentialsMethodExpr)
+            .setReturnType(settingsVarType)
+            .setMethodName("build")
+            .build();
+
+    Expr initSettingsVarExpr =
+        AssignmentExpr.builder()
+            .setVariableExpr(settingsVarExpr.toBuilder().setIsDecl(true).build())
+            .setValueExpr(buildMethodExpr)
+            .build();
+
+    String className = JavaStyle.toLowerCamelCase(getClientClassName(service.name()));
+    TypeNode classType = types.get(getClientClassName(service.name()));
+    VariableExpr clientVarExpr = VariableExpr.withVariable(Variable.builder().setName(className).setType(classType).build());
+    MethodInvocationExpr createMethodExpr = MethodInvocationExpr.builder().setStaticReferenceType(classType).setArguments(settingsVarExpr).setMethodName("create").setReturnType(classType).build();
+    Expr initClientVarExpr = AssignmentExpr.builder()
+        .setVariableExpr(clientVarExpr.toBuilder().setIsDecl(true).build())
+        .setValueExpr(createMethodExpr)
+        .build();
+
+    return writeSampleCode(Arrays.asList(initSettingsVarExpr, initClientVarExpr));
+  }
+
+  public static String composeClassHeaderEndpointSampleCode(Service service, Map<String, TypeNode> types) {
+    String settingsVarName = JavaStyle.toLowerCamelCase(getSettingsName(service.name()));
+    TypeNode settingsVarType = types.get(getSettingsName(service.name()));
+    VariableExpr settingsVarExpr = VariableExpr.withVariable(
+        Variable.builder()
+            .setName(settingsVarName)
+            .setType(settingsVarType)
+            .build());
+    MethodInvocationExpr newBuilderMethodExpr =
+        MethodInvocationExpr.builder()
+            .setStaticReferenceType(settingsVarType)
+            .setMethodName("newBuilder")
+            .build();
+    MethodInvocationExpr credentialsMethodExpr =
+        MethodInvocationExpr.builder()
+            .setExprReferenceExpr(newBuilderMethodExpr)
+            .setArguments(ValueExpr.withValue(StringObjectValue.withValue("myEndpoint")))
+            .setMethodName("setEndpoint")
+            .build();
+    MethodInvocationExpr buildMethodExpr =
+        MethodInvocationExpr.builder()
+            .setExprReferenceExpr(credentialsMethodExpr)
+            .setReturnType(settingsVarType)
+            .setMethodName("build")
+            .build();
+
+    Expr initSettingsVarExpr =
+        AssignmentExpr.builder()
+            .setVariableExpr(settingsVarExpr.toBuilder().setIsDecl(true).build())
+            .setValueExpr(buildMethodExpr)
+            .build();
+
+    String className = JavaStyle.toLowerCamelCase(getClientClassName(service.name()));
+    TypeNode classType = types.get(getClientClassName(service.name()));
+    VariableExpr clientVarExpr = VariableExpr.withVariable(Variable.builder().setName(className).setType(classType).build());
+    MethodInvocationExpr createMethodExpr = MethodInvocationExpr.builder().setStaticReferenceType(classType).setArguments(settingsVarExpr).setMethodName("create").setReturnType(classType).build();
+    Expr initClientVarExpr = AssignmentExpr.builder()
+        .setVariableExpr(clientVarExpr.toBuilder().setIsDecl(true).build())
+        .setValueExpr(createMethodExpr)
+        .build();
+
+    return writeSampleCode(Arrays.asList(
+        initSettingsVarExpr, initClientVarExpr
+    ));
+  }
+
+  private static String getClientClassName(String serviceName) {
+    return String.format(CLASS_NAME_PATTERN, serviceName);
+  }
+
+  private static String getSettingsName(String serviceName) {
+    return String.format(SETTINGS_NAME_PATTERN, serviceName);
+  }
+
+  private static String writeSampleCode(List<Expr> exprs) {
+    List<Statement> statements =
+        exprs
+            .stream()
+            .map(e -> ExprStatement.withExpr(e))
+            .collect(Collectors.toList());
+    JavaWriterVisitor visitor = new JavaWriterVisitor();
+    for (Statement statement : statements) {
+      statement.accept(visitor);
+    }
+    return SampleCodeJavaFormatter.format(visitor.write());
+  }
+}
diff --git a/src/main/java/com/google/api/generator/gapic/composer/samplecode/SettingsCommentSampleCodeComposer.java b/src/main/java/com/google/api/generator/gapic/composer/samplecode/SettingsCommentSampleCodeComposer.java
new file mode 100644
index 0000000000..f8fdc4b787
--- /dev/null
+++ b/src/main/java/com/google/api/generator/gapic/composer/samplecode/SettingsCommentSampleCodeComposer.java
@@ -0,0 +1,161 @@
+// Copyright 2020 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.
+
+package com.google.api.generator.gapic.composer.samplecode;
+
+import com.google.api.generator.engine.ast.AssignmentExpr;
+import com.google.api.generator.engine.ast.ConcreteReference;
+import com.google.api.generator.engine.ast.Expr;
+import com.google.api.generator.engine.ast.ExprStatement;
+import com.google.api.generator.engine.ast.MethodInvocationExpr;
+import com.google.api.generator.engine.ast.PrimitiveValue;
+import com.google.api.generator.engine.ast.Statement;
+import com.google.api.generator.engine.ast.TypeNode;
+import com.google.api.generator.engine.ast.ValueExpr;
+import com.google.api.generator.engine.ast.VaporReference;
+import com.google.api.generator.engine.ast.Variable;
+import com.google.api.generator.engine.ast.VariableExpr;
+import com.google.api.generator.engine.writer.JavaWriterVisitor;
+import com.google.api.generator.gapic.model.Method;
+import com.google.api.generator.gapic.utils.JavaStyle;
+import java.time.Duration;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class SettingsCommentSampleCodeComposer {
+
+  private static final String BUILDER_NAME_PATTERN = "%sBuilder";
+  private static final String STUB = "Stub";
+  private static final String EMPTY_STRING = "";
+
+  public static String composeSettingClassHeaderSampleCode(Method method, TypeNode classType) {
+    String className = classType.reference().name();
+    TypeNode builderType =
+        TypeNode.withReference(
+            VaporReference.builder()
+                .setEnclosingClassNames(classType.reference().name())
+                .setName("Builder")
+                .setPakkage(classType.reference().pakkage())
+                .build());
+    Variable builderVar =
+        Variable.builder()
+            .setName(getClassSettingsBuilderName(className))
+            .setType(builderType)
+            .build();
+
+    VariableExpr localSettingsVarExpr = VariableExpr.withVariable(builderVar);
+
+    Expr settingsBuilderExpr =
+        MethodInvocationExpr.builder()
+            .setStaticReferenceType(classType)
+            .setMethodName("newBuilder")
+            .setReturnType(builderType)
+            .build();
+
+    Expr initLocalSettingsExpr =
+        AssignmentExpr.builder()
+            .setVariableExpr(localSettingsVarExpr.toBuilder().setIsDecl(true).build())
+            .setValueExpr(settingsBuilderExpr)
+            .build();
+
+    MethodInvocationExpr retrySettingsMethodExpr =
+        MethodInvocationExpr.builder()
+            .setExprReferenceExpr(localSettingsVarExpr)
+            .setMethodName(JavaStyle.toLowerCamelCase(String.format("%sSettings", method.name())))
+            .setReturnType(method.outputType())
+            .build();
+
+    MethodInvocationExpr timeoutArExpr =
+        MethodInvocationExpr.builder()
+            .setStaticReferenceType(
+                TypeNode.withReference(ConcreteReference.withClazz(Duration.class)))
+            .setMethodName("ofSeconds")
+            .setArguments(
+                ValueExpr.withValue(
+                    PrimitiveValue.builder().setType(TypeNode.INT).setValue("30").build()))
+            .build();
+
+    MethodInvocationExpr timeoutBuilderMethodExpr =
+        MethodInvocationExpr.builder()
+            .setExprReferenceExpr(
+                MethodInvocationExpr.builder()
+                    .setExprReferenceExpr(
+                        MethodInvocationExpr.builder()
+                            .setExprReferenceExpr(retrySettingsMethodExpr)
+                            .setMethodName("getRetrySettings")
+                            .build())
+                    .setMethodName("toBuilder")
+                    .build())
+            .setMethodName("setTotalTimeout")
+            .setArguments(Arrays.asList(timeoutArExpr))
+            .build();
+
+    MethodInvocationExpr retrySettingsArgExpr =
+        MethodInvocationExpr.builder()
+            .setExprReferenceExpr(timeoutBuilderMethodExpr)
+            .setMethodName("build")
+            .build();
+
+    MethodInvocationExpr settingBuilderMethodExpr =
+        MethodInvocationExpr.builder()
+            .setExprReferenceExpr(retrySettingsMethodExpr)
+            .setMethodName("setRetrySettings")
+            .setArguments(Arrays.asList(retrySettingsArgExpr))
+            .build();
+
+    VariableExpr settingsVarExpr =
+        VariableExpr.withVariable(
+            Variable.builder()
+                .setType(classType)
+                .setName(getServiceSettingsName(className))
+                .build());
+
+    AssignmentExpr settingBuildAssignmentExpr =
+        AssignmentExpr.builder()
+            .setVariableExpr(settingsVarExpr.toBuilder().setIsDecl(true).build())
+            .setValueExpr(
+                MethodInvocationExpr.builder()
+                    .setExprReferenceExpr(localSettingsVarExpr)
+                    .setMethodName("build")
+                    .setReturnType(classType)
+                    .build())
+            .build();
+
+    List<Statement> statements =
+        Arrays.asList(initLocalSettingsExpr, settingBuilderMethodExpr, settingBuildAssignmentExpr)
+            .stream()
+            .map(e -> ExprStatement.withExpr(e))
+            .collect(Collectors.toList());
+    return SampleCodeJavaFormatter.format(writeStatements(statements));
+  }
+
+  private static String getServiceSettingsName(String className) {
+    return JavaStyle.toLowerCamelCase(className).replace(STUB, EMPTY_STRING);
+  }
+
+  private static String getClassSettingsBuilderName(String className) {
+    return JavaStyle.toLowerCamelCase(
+            String.format(BUILDER_NAME_PATTERN, JavaStyle.toLowerCamelCase(className)))
+        .replace(STUB, EMPTY_STRING);
+  }
+
+  private static String writeStatements(List<Statement> statements) {
+    JavaWriterVisitor visitor = new JavaWriterVisitor();
+    for (Statement statement : statements) {
+      statement.accept(visitor);
+    }
+    return visitor.write();
+  }
+}
diff --git a/src/test/java/com/google/api/generator/gapic/composer/BUILD.bazel b/src/test/java/com/google/api/generator/gapic/composer/BUILD.bazel
index 939cc4819d..f17da442d9 100644
--- a/src/test/java/com/google/api/generator/gapic/composer/BUILD.bazel
+++ b/src/test/java/com/google/api/generator/gapic/composer/BUILD.bazel
@@ -31,6 +31,7 @@ TEST_DEPS = [
     "//src/main/java/com/google/api/generator/gapic/composer",
     "//src/test/java/com/google/api/generator/test/framework:asserts",
     "//src/test/java/com/google/api/generator/test/framework:utils",
+    "//src/main/java/com/google/api/generator/gapic/composer/samplecode",
     "//src/main/java/com/google/api/generator/gapic/model",
     "//src/main/java/com/google/api/generator/gapic/protoparser",
     "//src/test/java/com/google/api/generator/gapic/testdata:showcase_java_proto",
diff --git a/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoClient.golden b/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoClient.golden
index 20a193853e..c2b7448351 100644
--- a/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoClient.golden
+++ b/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoClient.golden
@@ -63,7 +63,20 @@ import javax.annotation.Generated;
  *
  * <p>To customize credentials:
  *
+ * <pre><code>
+ * EchoSettings echoSettings =
+ *     EchoSettings.newBuilder()
+ *         .setCredentialsProvider(FixedCredentialsProvider.create("myCredentials"))
+ *         .build();
+ * EchoClient echoClient = EchoClient.create(echoSettings);
+ * </code></pre>
+ *
  * <p>To customize the endpoint:
+ *
+ * <pre><code>
+ * EchoSettings echoSettings = EchoSettings.newBuilder().setEndpoint("myEndpoint").build();
+ * EchoClient echoClient = EchoClient.create(echoSettings);
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator")
diff --git a/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoSettings.golden b/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoSettings.golden
index 076e0d772b..1ce00dbf4b 100644
--- a/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoSettings.golden
+++ b/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoSettings.golden
@@ -39,6 +39,20 @@ import javax.annotation.Generated;
  * build() is called, the tree of builders is called to create the complete settings object.
  *
  * <p>For example, to set the total timeout of echo to 30 seconds:
+ *
+ * <pre><code>
+ * EchoSettings.Builder echoSettingsBuilder = EchoSettings.newBuilder();
+ * echoSettingsBuilder
+ *     .echoSettings()
+ *     .setRetrySettings(
+ *         echoSettingsBuilder
+ *             .echoSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * EchoSettings echoSettings = echoSettingsBuilder.build();
+ * </code></pre>
  */
 @Generated("by gapic-generator-java")
 public class EchoSettings extends ClientSettings<EchoSettings> {
diff --git a/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoStubSettings.golden b/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoStubSettings.golden
index 9bb853eee2..3dc9f78b3d 100644
--- a/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoStubSettings.golden
+++ b/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoStubSettings.golden
@@ -67,6 +67,20 @@ import org.threeten.bp.Duration;
  * build() is called, the tree of builders is called to create the complete settings object.
  *
  * <p>For example, to set the total timeout of echo to 30 seconds:
+ *
+ * <pre><code>
+ * EchoStubSettings.Builder echoSettingsBuilder = EchoStubSettings.newBuilder();
+ * echoSettingsBuilder
+ *     .echoSettings()
+ *     .setRetrySettings(
+ *         echoSettingsBuilder
+ *             .echoSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * EchoStubSettings echoSettings = echoSettingsBuilder.build();
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator-java")
diff --git a/src/test/java/com/google/api/generator/gapic/composer/goldens/IdentityClient.golden b/src/test/java/com/google/api/generator/gapic/composer/goldens/IdentityClient.golden
index 0f48757f2b..f6f5d38a05 100644
--- a/src/test/java/com/google/api/generator/gapic/composer/goldens/IdentityClient.golden
+++ b/src/test/java/com/google/api/generator/gapic/composer/goldens/IdentityClient.golden
@@ -53,7 +53,21 @@ import javax.annotation.Generated;
  *
  * <p>To customize credentials:
  *
+ * <pre><code>
+ * IdentitySettings identitySettings =
+ *     IdentitySettings.newBuilder()
+ *         .setCredentialsProvider(FixedCredentialsProvider.create("myCredentials"))
+ *         .build();
+ * IdentityClient identityClient = IdentityClient.create(identitySettings);
+ * </code></pre>
+ *
  * <p>To customize the endpoint:
+ *
+ * <pre><code>
+ * IdentitySettings identitySettings =
+ *     IdentitySettings.newBuilder().setEndpoint("myEndpoint").build();
+ * IdentityClient identityClient = IdentityClient.create(identitySettings);
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator")
diff --git a/src/test/java/com/google/api/generator/gapic/composer/goldens/LoggingServiceV2StubSettings.golden b/src/test/java/com/google/api/generator/gapic/composer/goldens/LoggingServiceV2StubSettings.golden
index fe7cd63332..029da331be 100644
--- a/src/test/java/com/google/api/generator/gapic/composer/goldens/LoggingServiceV2StubSettings.golden
+++ b/src/test/java/com/google/api/generator/gapic/composer/goldens/LoggingServiceV2StubSettings.golden
@@ -64,6 +64,21 @@ import org.threeten.bp.Duration;
  * build() is called, the tree of builders is called to create the complete settings object.
  *
  * <p>For example, to set the total timeout of deleteLog to 30 seconds:
+ *
+ * <pre><code>
+ * LoggingServiceV2StubSettings.Builder loggingServiceV2SettingsBuilder =
+ *     LoggingServiceV2StubSettings.newBuilder();
+ * loggingServiceV2SettingsBuilder
+ *     .deleteLogSettings()
+ *     .setRetrySettings(
+ *         loggingServiceV2SettingsBuilder
+ *             .deleteLogSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * LoggingServiceV2StubSettings loggingServiceV2Settings = loggingServiceV2SettingsBuilder.build();
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator-java")
diff --git a/src/test/java/com/google/api/generator/gapic/composer/goldens/PublisherStubSettings.golden b/src/test/java/com/google/api/generator/gapic/composer/goldens/PublisherStubSettings.golden
index fe73523fcd..7be4a3739a 100644
--- a/src/test/java/com/google/api/generator/gapic/composer/goldens/PublisherStubSettings.golden
+++ b/src/test/java/com/google/api/generator/gapic/composer/goldens/PublisherStubSettings.golden
@@ -67,6 +67,20 @@ import org.threeten.bp.Duration;
  * build() is called, the tree of builders is called to create the complete settings object.
  *
  * <p>For example, to set the total timeout of createTopic to 30 seconds:
+ *
+ * <pre><code>
+ * PublisherStubSettings.Builder publisherSettingsBuilder = PublisherStubSettings.newBuilder();
+ * publisherSettingsBuilder
+ *     .createTopicSettings()
+ *     .setRetrySettings(
+ *         publisherSettingsBuilder
+ *             .createTopicSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * PublisherStubSettings publisherSettings = publisherSettingsBuilder.build();
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator-java")
diff --git a/test/integration/goldens/asset/AssetServiceClient.java b/test/integration/goldens/asset/AssetServiceClient.java
index 103843b065..8bcfb59fa8 100644
--- a/test/integration/goldens/asset/AssetServiceClient.java
+++ b/test/integration/goldens/asset/AssetServiceClient.java
@@ -75,7 +75,21 @@
  *
  * <p>To customize credentials:
  *
+ * <pre><code>
+ * AssetServiceSettings assetServiceSettings =
+ *     AssetServiceSettings.newBuilder()
+ *         .setCredentialsProvider(FixedCredentialsProvider.create("myCredentials"))
+ *         .build();
+ * AssetServiceClient assetServiceClient = AssetServiceClient.create(assetServiceSettings);
+ * </code></pre>
+ *
  * <p>To customize the endpoint:
+ *
+ * <pre><code>
+ * AssetServiceSettings assetServiceSettings =
+ *     AssetServiceSettings.newBuilder().setEndpoint("myEndpoint").build();
+ * AssetServiceClient assetServiceClient = AssetServiceClient.create(assetServiceSettings);
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator")
diff --git a/test/integration/goldens/asset/AssetServiceSettings.java b/test/integration/goldens/asset/AssetServiceSettings.java
index 304d71696c..3ab6082f1f 100644
--- a/test/integration/goldens/asset/AssetServiceSettings.java
+++ b/test/integration/goldens/asset/AssetServiceSettings.java
@@ -54,7 +54,21 @@
  * <p>The builder of this class is recursive, so contained classes are themselves builders. When
  * build() is called, the tree of builders is called to create the complete settings object.
  *
- * <p>For example, to set the total timeout of exportAssets to 30 seconds:
+ * <p>For example, to set the total timeout of batchGetAssetsHistory to 30 seconds:
+ *
+ * <pre><code>
+ * AssetServiceSettings.Builder assetServiceSettingsBuilder = AssetServiceSettings.newBuilder();
+ * assetServiceSettingsBuilder
+ *     .batchGetAssetsHistorySettings()
+ *     .setRetrySettings(
+ *         assetServiceSettingsBuilder
+ *             .batchGetAssetsHistorySettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * AssetServiceSettings assetServiceSettings = assetServiceSettingsBuilder.build();
+ * </code></pre>
  */
 @Generated("by gapic-generator-java")
 public class AssetServiceSettings extends ClientSettings<AssetServiceSettings> {
diff --git a/test/integration/goldens/asset/AssetServiceStubSettings.java b/test/integration/goldens/asset/AssetServiceStubSettings.java
index c535fa3857..757a028b25 100644
--- a/test/integration/goldens/asset/AssetServiceStubSettings.java
+++ b/test/integration/goldens/asset/AssetServiceStubSettings.java
@@ -89,7 +89,22 @@
  * <p>The builder of this class is recursive, so contained classes are themselves builders. When
  * build() is called, the tree of builders is called to create the complete settings object.
  *
- * <p>For example, to set the total timeout of exportAssets to 30 seconds:
+ * <p>For example, to set the total timeout of batchGetAssetsHistory to 30 seconds:
+ *
+ * <pre><code>
+ * AssetServiceStubSettings.Builder assetServiceSettingsBuilder =
+ *     AssetServiceStubSettings.newBuilder();
+ * assetServiceSettingsBuilder
+ *     .batchGetAssetsHistorySettings()
+ *     .setRetrySettings(
+ *         assetServiceSettingsBuilder
+ *             .batchGetAssetsHistorySettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * AssetServiceStubSettings assetServiceSettings = assetServiceSettingsBuilder.build();
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator-java")
diff --git a/test/integration/goldens/logging/ConfigServiceV2Client.java b/test/integration/goldens/logging/ConfigServiceV2Client.java
index b6516172fc..5684e2b645 100644
--- a/test/integration/goldens/logging/ConfigServiceV2Client.java
+++ b/test/integration/goldens/logging/ConfigServiceV2Client.java
@@ -73,7 +73,23 @@
  *
  * <p>To customize credentials:
  *
+ * <pre><code>
+ * ConfigServiceV2Settings configServiceV2Settings =
+ *     ConfigServiceV2Settings.newBuilder()
+ *         .setCredentialsProvider(FixedCredentialsProvider.create("myCredentials"))
+ *         .build();
+ * ConfigServiceV2Client configServiceV2Client =
+ *     ConfigServiceV2Client.create(configServiceV2Settings);
+ * </code></pre>
+ *
  * <p>To customize the endpoint:
+ *
+ * <pre><code>
+ * ConfigServiceV2Settings configServiceV2Settings =
+ *     ConfigServiceV2Settings.newBuilder().setEndpoint("myEndpoint").build();
+ * ConfigServiceV2Client configServiceV2Client =
+ *     ConfigServiceV2Client.create(configServiceV2Settings);
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator")
diff --git a/test/integration/goldens/logging/ConfigServiceV2Settings.java b/test/integration/goldens/logging/ConfigServiceV2Settings.java
index 1ae26f5c78..5d28b9c480 100644
--- a/test/integration/goldens/logging/ConfigServiceV2Settings.java
+++ b/test/integration/goldens/logging/ConfigServiceV2Settings.java
@@ -53,7 +53,22 @@
  * <p>The builder of this class is recursive, so contained classes are themselves builders. When
  * build() is called, the tree of builders is called to create the complete settings object.
  *
- * <p>For example, to set the total timeout of listBuckets to 30 seconds:
+ * <p>For example, to set the total timeout of getBucket to 30 seconds:
+ *
+ * <pre><code>
+ * ConfigServiceV2Settings.Builder configServiceV2SettingsBuilder =
+ *     ConfigServiceV2Settings.newBuilder();
+ * configServiceV2SettingsBuilder
+ *     .getBucketSettings()
+ *     .setRetrySettings(
+ *         configServiceV2SettingsBuilder
+ *             .getBucketSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * ConfigServiceV2Settings configServiceV2Settings = configServiceV2SettingsBuilder.build();
+ * </code></pre>
  */
 @Generated("by gapic-generator-java")
 public class ConfigServiceV2Settings extends ClientSettings<ConfigServiceV2Settings> {
diff --git a/test/integration/goldens/logging/ConfigServiceV2StubSettings.java b/test/integration/goldens/logging/ConfigServiceV2StubSettings.java
index c51140e8fc..e1403479fd 100644
--- a/test/integration/goldens/logging/ConfigServiceV2StubSettings.java
+++ b/test/integration/goldens/logging/ConfigServiceV2StubSettings.java
@@ -90,7 +90,22 @@
  * <p>The builder of this class is recursive, so contained classes are themselves builders. When
  * build() is called, the tree of builders is called to create the complete settings object.
  *
- * <p>For example, to set the total timeout of listBuckets to 30 seconds:
+ * <p>For example, to set the total timeout of getBucket to 30 seconds:
+ *
+ * <pre><code>
+ * ConfigServiceV2StubSettings.Builder configServiceV2SettingsBuilder =
+ *     ConfigServiceV2StubSettings.newBuilder();
+ * configServiceV2SettingsBuilder
+ *     .getBucketSettings()
+ *     .setRetrySettings(
+ *         configServiceV2SettingsBuilder
+ *             .getBucketSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * ConfigServiceV2StubSettings configServiceV2Settings = configServiceV2SettingsBuilder.build();
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator-java")
diff --git a/test/integration/goldens/logging/LoggingServiceV2Client.java b/test/integration/goldens/logging/LoggingServiceV2Client.java
index d90cbfadf6..a9b033e8d0 100644
--- a/test/integration/goldens/logging/LoggingServiceV2Client.java
+++ b/test/integration/goldens/logging/LoggingServiceV2Client.java
@@ -75,7 +75,23 @@
  *
  * <p>To customize credentials:
  *
+ * <pre><code>
+ * LoggingServiceV2Settings loggingServiceV2Settings =
+ *     LoggingServiceV2Settings.newBuilder()
+ *         .setCredentialsProvider(FixedCredentialsProvider.create("myCredentials"))
+ *         .build();
+ * LoggingServiceV2Client loggingServiceV2Client =
+ *     LoggingServiceV2Client.create(loggingServiceV2Settings);
+ * </code></pre>
+ *
  * <p>To customize the endpoint:
+ *
+ * <pre><code>
+ * LoggingServiceV2Settings loggingServiceV2Settings =
+ *     LoggingServiceV2Settings.newBuilder().setEndpoint("myEndpoint").build();
+ * LoggingServiceV2Client loggingServiceV2Client =
+ *     LoggingServiceV2Client.create(loggingServiceV2Settings);
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator")
diff --git a/test/integration/goldens/logging/LoggingServiceV2Settings.java b/test/integration/goldens/logging/LoggingServiceV2Settings.java
index 83dc356803..74ceaf797e 100644
--- a/test/integration/goldens/logging/LoggingServiceV2Settings.java
+++ b/test/integration/goldens/logging/LoggingServiceV2Settings.java
@@ -54,6 +54,21 @@
  * build() is called, the tree of builders is called to create the complete settings object.
  *
  * <p>For example, to set the total timeout of deleteLog to 30 seconds:
+ *
+ * <pre><code>
+ * LoggingServiceV2Settings.Builder loggingServiceV2SettingsBuilder =
+ *     LoggingServiceV2Settings.newBuilder();
+ * loggingServiceV2SettingsBuilder
+ *     .deleteLogSettings()
+ *     .setRetrySettings(
+ *         loggingServiceV2SettingsBuilder
+ *             .deleteLogSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * LoggingServiceV2Settings loggingServiceV2Settings = loggingServiceV2SettingsBuilder.build();
+ * </code></pre>
  */
 @Generated("by gapic-generator-java")
 public class LoggingServiceV2Settings extends ClientSettings<LoggingServiceV2Settings> {
diff --git a/test/integration/goldens/logging/LoggingServiceV2StubSettings.java b/test/integration/goldens/logging/LoggingServiceV2StubSettings.java
index 7e6456b3d4..870cd0cf9b 100644
--- a/test/integration/goldens/logging/LoggingServiceV2StubSettings.java
+++ b/test/integration/goldens/logging/LoggingServiceV2StubSettings.java
@@ -80,6 +80,21 @@
  * build() is called, the tree of builders is called to create the complete settings object.
  *
  * <p>For example, to set the total timeout of deleteLog to 30 seconds:
+ *
+ * <pre><code>
+ * LoggingServiceV2StubSettings.Builder loggingServiceV2SettingsBuilder =
+ *     LoggingServiceV2StubSettings.newBuilder();
+ * loggingServiceV2SettingsBuilder
+ *     .deleteLogSettings()
+ *     .setRetrySettings(
+ *         loggingServiceV2SettingsBuilder
+ *             .deleteLogSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * LoggingServiceV2StubSettings loggingServiceV2Settings = loggingServiceV2SettingsBuilder.build();
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator-java")
diff --git a/test/integration/goldens/logging/MetricsServiceV2Client.java b/test/integration/goldens/logging/MetricsServiceV2Client.java
index 19f6aef98d..8dda7cd6ee 100644
--- a/test/integration/goldens/logging/MetricsServiceV2Client.java
+++ b/test/integration/goldens/logging/MetricsServiceV2Client.java
@@ -72,7 +72,23 @@
  *
  * <p>To customize credentials:
  *
+ * <pre><code>
+ * MetricsServiceV2Settings metricsServiceV2Settings =
+ *     MetricsServiceV2Settings.newBuilder()
+ *         .setCredentialsProvider(FixedCredentialsProvider.create("myCredentials"))
+ *         .build();
+ * MetricsServiceV2Client metricsServiceV2Client =
+ *     MetricsServiceV2Client.create(metricsServiceV2Settings);
+ * </code></pre>
+ *
  * <p>To customize the endpoint:
+ *
+ * <pre><code>
+ * MetricsServiceV2Settings metricsServiceV2Settings =
+ *     MetricsServiceV2Settings.newBuilder().setEndpoint("myEndpoint").build();
+ * MetricsServiceV2Client metricsServiceV2Client =
+ *     MetricsServiceV2Client.create(metricsServiceV2Settings);
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator")
diff --git a/test/integration/goldens/logging/MetricsServiceV2Settings.java b/test/integration/goldens/logging/MetricsServiceV2Settings.java
index e9c0451fcb..db130809c7 100644
--- a/test/integration/goldens/logging/MetricsServiceV2Settings.java
+++ b/test/integration/goldens/logging/MetricsServiceV2Settings.java
@@ -51,7 +51,22 @@
  * <p>The builder of this class is recursive, so contained classes are themselves builders. When
  * build() is called, the tree of builders is called to create the complete settings object.
  *
- * <p>For example, to set the total timeout of listLogMetrics to 30 seconds:
+ * <p>For example, to set the total timeout of getLogMetric to 30 seconds:
+ *
+ * <pre><code>
+ * MetricsServiceV2Settings.Builder metricsServiceV2SettingsBuilder =
+ *     MetricsServiceV2Settings.newBuilder();
+ * metricsServiceV2SettingsBuilder
+ *     .getLogMetricSettings()
+ *     .setRetrySettings(
+ *         metricsServiceV2SettingsBuilder
+ *             .getLogMetricSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * MetricsServiceV2Settings metricsServiceV2Settings = metricsServiceV2SettingsBuilder.build();
+ * </code></pre>
  */
 @Generated("by gapic-generator-java")
 public class MetricsServiceV2Settings extends ClientSettings<MetricsServiceV2Settings> {
diff --git a/test/integration/goldens/logging/MetricsServiceV2StubSettings.java b/test/integration/goldens/logging/MetricsServiceV2StubSettings.java
index 2d0a8aedbc..a6909c88f4 100644
--- a/test/integration/goldens/logging/MetricsServiceV2StubSettings.java
+++ b/test/integration/goldens/logging/MetricsServiceV2StubSettings.java
@@ -73,7 +73,22 @@
  * <p>The builder of this class is recursive, so contained classes are themselves builders. When
  * build() is called, the tree of builders is called to create the complete settings object.
  *
- * <p>For example, to set the total timeout of listLogMetrics to 30 seconds:
+ * <p>For example, to set the total timeout of getLogMetric to 30 seconds:
+ *
+ * <pre><code>
+ * MetricsServiceV2StubSettings.Builder metricsServiceV2SettingsBuilder =
+ *     MetricsServiceV2StubSettings.newBuilder();
+ * metricsServiceV2SettingsBuilder
+ *     .getLogMetricSettings()
+ *     .setRetrySettings(
+ *         metricsServiceV2SettingsBuilder
+ *             .getLogMetricSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * MetricsServiceV2StubSettings metricsServiceV2Settings = metricsServiceV2SettingsBuilder.build();
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator-java")
diff --git a/test/integration/goldens/redis/CloudRedisClient.java b/test/integration/goldens/redis/CloudRedisClient.java
index c807b6dd8a..26b277058c 100644
--- a/test/integration/goldens/redis/CloudRedisClient.java
+++ b/test/integration/goldens/redis/CloudRedisClient.java
@@ -95,7 +95,21 @@
  *
  * <p>To customize credentials:
  *
+ * <pre><code>
+ * CloudRedisSettings cloudRedisSettings =
+ *     CloudRedisSettings.newBuilder()
+ *         .setCredentialsProvider(FixedCredentialsProvider.create("myCredentials"))
+ *         .build();
+ * CloudRedisClient cloudRedisClient = CloudRedisClient.create(cloudRedisSettings);
+ * </code></pre>
+ *
  * <p>To customize the endpoint:
+ *
+ * <pre><code>
+ * CloudRedisSettings cloudRedisSettings =
+ *     CloudRedisSettings.newBuilder().setEndpoint("myEndpoint").build();
+ * CloudRedisClient cloudRedisClient = CloudRedisClient.create(cloudRedisSettings);
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator")
diff --git a/test/integration/goldens/redis/CloudRedisSettings.java b/test/integration/goldens/redis/CloudRedisSettings.java
index 4a33403427..6cd3bb5974 100644
--- a/test/integration/goldens/redis/CloudRedisSettings.java
+++ b/test/integration/goldens/redis/CloudRedisSettings.java
@@ -53,7 +53,21 @@
  * <p>The builder of this class is recursive, so contained classes are themselves builders. When
  * build() is called, the tree of builders is called to create the complete settings object.
  *
- * <p>For example, to set the total timeout of listInstances to 30 seconds:
+ * <p>For example, to set the total timeout of getInstance to 30 seconds:
+ *
+ * <pre><code>
+ * CloudRedisSettings.Builder cloudRedisSettingsBuilder = CloudRedisSettings.newBuilder();
+ * cloudRedisSettingsBuilder
+ *     .getInstanceSettings()
+ *     .setRetrySettings(
+ *         cloudRedisSettingsBuilder
+ *             .getInstanceSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * CloudRedisSettings cloudRedisSettings = cloudRedisSettingsBuilder.build();
+ * </code></pre>
  */
 @Generated("by gapic-generator-java")
 public class CloudRedisSettings extends ClientSettings<CloudRedisSettings> {
diff --git a/test/integration/goldens/redis/CloudRedisStubSettings.java b/test/integration/goldens/redis/CloudRedisStubSettings.java
index 0ab9d31bae..ed8c262e4c 100644
--- a/test/integration/goldens/redis/CloudRedisStubSettings.java
+++ b/test/integration/goldens/redis/CloudRedisStubSettings.java
@@ -83,7 +83,21 @@
  * <p>The builder of this class is recursive, so contained classes are themselves builders. When
  * build() is called, the tree of builders is called to create the complete settings object.
  *
- * <p>For example, to set the total timeout of listInstances to 30 seconds:
+ * <p>For example, to set the total timeout of getInstance to 30 seconds:
+ *
+ * <pre><code>
+ * CloudRedisStubSettings.Builder cloudRedisSettingsBuilder = CloudRedisStubSettings.newBuilder();
+ * cloudRedisSettingsBuilder
+ *     .getInstanceSettings()
+ *     .setRetrySettings(
+ *         cloudRedisSettingsBuilder
+ *             .getInstanceSettings()
+ *             .getRetrySettings()
+ *             .toBuilder()
+ *             .setTotalTimeout(Duration.ofSeconds(30))
+ *             .build());
+ * CloudRedisStubSettings cloudRedisSettings = cloudRedisSettingsBuilder.build();
+ * </code></pre>
  */
 @BetaApi
 @Generated("by gapic-generator-java")