diff --git a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceClient.java b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceClient.java
index 4e567d27..bd621f26 100644
--- a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceClient.java
+++ b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.recaptchaenterprise.v1;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -710,14 +709,7 @@ public static ApiFuture<ListKeysPagedResponse> createAsync(
       ApiFuture<ListKeysPage> futurePage =
           ListKeysPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
-          futurePage,
-          new ApiFunction<ListKeysPage, ListKeysPagedResponse>() {
-            @Override
-            public ListKeysPagedResponse apply(ListKeysPage input) {
-              return new ListKeysPagedResponse(input);
-            }
-          },
-          MoreExecutors.directExecutor());
+          futurePage, input -> new ListKeysPagedResponse(input), MoreExecutors.directExecutor());
     }
 
     private ListKeysPagedResponse(ListKeysPage page) {
diff --git a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceSettings.java b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceSettings.java
index f5e4cc4e..a114b824 100644
--- a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceSettings.java
+++ b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceSettings.java
@@ -208,14 +208,13 @@ public RecaptchaEnterpriseServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((RecaptchaEnterpriseServiceStubSettings.Builder) getStubSettings());
     }
 
-    // NEXT_MAJOR_VER: remove 'throws Exception'.
     /**
      * Applies the given settings updater function to all of the unary API methods in this service.
      *
      * <p>Note: This method does not support applying settings to streaming methods.
      */
     public Builder applyToAllUnaryMethods(
-        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) throws Exception {
+        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) {
       super.applyToAllUnaryMethods(
           getStubSettingsBuilder().unaryMethodSettingsBuilders(), settingsUpdater);
       return this;
diff --git a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceStub.java b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceStub.java
index b6dfe382..3c67410b 100644
--- a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceStub.java
+++ b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceStub.java
@@ -23,7 +23,6 @@
 import com.google.api.gax.grpc.GrpcCallSettings;
 import com.google.api.gax.grpc.GrpcStubCallableFactory;
 import com.google.api.gax.rpc.ClientContext;
-import com.google.api.gax.rpc.RequestParamsExtractor;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.common.collect.ImmutableMap;
 import com.google.longrunning.stub.GrpcOperationsStub;
@@ -42,7 +41,6 @@
 import io.grpc.MethodDescriptor;
 import io.grpc.protobuf.ProtoUtils;
 import java.io.IOException;
-import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
 
@@ -184,13 +182,10 @@ protected GrpcRecaptchaEnterpriseServiceStub(
         GrpcCallSettings.<CreateAssessmentRequest, Assessment>newBuilder()
             .setMethodDescriptor(createAssessmentMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateAssessmentRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateAssessmentRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("parent", String.valueOf(request.getParent()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("parent", String.valueOf(request.getParent()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<AnnotateAssessmentRequest, AnnotateAssessmentResponse>
@@ -198,78 +193,60 @@ public Map<String, String> extract(CreateAssessmentRequest request) {
             GrpcCallSettings.<AnnotateAssessmentRequest, AnnotateAssessmentResponse>newBuilder()
                 .setMethodDescriptor(annotateAssessmentMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<AnnotateAssessmentRequest>() {
-                      @Override
-                      public Map<String, String> extract(AnnotateAssessmentRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put("name", String.valueOf(request.getName()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put("name", String.valueOf(request.getName()));
+                      return params.build();
                     })
                 .build();
     GrpcCallSettings<CreateKeyRequest, Key> createKeyTransportSettings =
         GrpcCallSettings.<CreateKeyRequest, Key>newBuilder()
             .setMethodDescriptor(createKeyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateKeyRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateKeyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("parent", String.valueOf(request.getParent()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("parent", String.valueOf(request.getParent()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<ListKeysRequest, ListKeysResponse> listKeysTransportSettings =
         GrpcCallSettings.<ListKeysRequest, ListKeysResponse>newBuilder()
             .setMethodDescriptor(listKeysMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListKeysRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListKeysRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("parent", String.valueOf(request.getParent()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("parent", String.valueOf(request.getParent()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<GetKeyRequest, Key> getKeyTransportSettings =
         GrpcCallSettings.<GetKeyRequest, Key>newBuilder()
             .setMethodDescriptor(getKeyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetKeyRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetKeyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<UpdateKeyRequest, Key> updateKeyTransportSettings =
         GrpcCallSettings.<UpdateKeyRequest, Key>newBuilder()
             .setMethodDescriptor(updateKeyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateKeyRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateKeyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("key.name", String.valueOf(request.getKey().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("key.name", String.valueOf(request.getKey().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<DeleteKeyRequest, Empty> deleteKeyTransportSettings =
         GrpcCallSettings.<DeleteKeyRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteKeyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteKeyRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteKeyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
 
diff --git a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStubSettings.java b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStubSettings.java
index 7d251ef0..afee9fbf 100644
--- a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStubSettings.java
+++ b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStubSettings.java
@@ -427,14 +427,13 @@ private static Builder initDefaults(Builder builder) {
       return builder;
     }
 
-    // NEXT_MAJOR_VER: remove 'throws Exception'.
     /**
      * Applies the given settings updater function to all of the unary API methods in this service.
      *
      * <p>Note: This method does not support applying settings to streaming methods.
      */
     public Builder applyToAllUnaryMethods(
-        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) throws Exception {
+        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) {
       super.applyToAllUnaryMethods(unaryMethodSettingsBuilders, settingsUpdater);
       return this;
     }
diff --git a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Client.java b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Client.java
index 24e16c26..9d50c662 100644
--- a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Client.java
+++ b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Client.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.recaptchaenterprise.v1beta1;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -718,14 +717,7 @@ public static ApiFuture<ListKeysPagedResponse> createAsync(
       ApiFuture<ListKeysPage> futurePage =
           ListKeysPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
-          futurePage,
-          new ApiFunction<ListKeysPage, ListKeysPagedResponse>() {
-            @Override
-            public ListKeysPagedResponse apply(ListKeysPage input) {
-              return new ListKeysPagedResponse(input);
-            }
-          },
-          MoreExecutors.directExecutor());
+          futurePage, input -> new ListKeysPagedResponse(input), MoreExecutors.directExecutor());
     }
 
     private ListKeysPagedResponse(ListKeysPage page) {
diff --git a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Settings.java b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Settings.java
index c83149d1..99dea9c4 100644
--- a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Settings.java
+++ b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Settings.java
@@ -211,14 +211,13 @@ public RecaptchaEnterpriseServiceV1Beta1StubSettings.Builder getStubSettingsBuil
       return ((RecaptchaEnterpriseServiceV1Beta1StubSettings.Builder) getStubSettings());
     }
 
-    // NEXT_MAJOR_VER: remove 'throws Exception'.
     /**
      * Applies the given settings updater function to all of the unary API methods in this service.
      *
      * <p>Note: This method does not support applying settings to streaming methods.
      */
     public Builder applyToAllUnaryMethods(
-        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) throws Exception {
+        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) {
       super.applyToAllUnaryMethods(
           getStubSettingsBuilder().unaryMethodSettingsBuilders(), settingsUpdater);
       return this;
diff --git a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1Stub.java b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1Stub.java
index f08531f5..076a975d 100644
--- a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1Stub.java
+++ b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1Stub.java
@@ -24,7 +24,6 @@
 import com.google.api.gax.grpc.GrpcCallSettings;
 import com.google.api.gax.grpc.GrpcStubCallableFactory;
 import com.google.api.gax.rpc.ClientContext;
-import com.google.api.gax.rpc.RequestParamsExtractor;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.common.collect.ImmutableMap;
 import com.google.longrunning.stub.GrpcOperationsStub;
@@ -43,7 +42,6 @@
 import io.grpc.MethodDescriptor;
 import io.grpc.protobuf.ProtoUtils;
 import java.io.IOException;
-import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
 
@@ -187,13 +185,10 @@ protected GrpcRecaptchaEnterpriseServiceV1Beta1Stub(
         GrpcCallSettings.<CreateAssessmentRequest, Assessment>newBuilder()
             .setMethodDescriptor(createAssessmentMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateAssessmentRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateAssessmentRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("parent", String.valueOf(request.getParent()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("parent", String.valueOf(request.getParent()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<AnnotateAssessmentRequest, AnnotateAssessmentResponse>
@@ -201,78 +196,60 @@ public Map<String, String> extract(CreateAssessmentRequest request) {
             GrpcCallSettings.<AnnotateAssessmentRequest, AnnotateAssessmentResponse>newBuilder()
                 .setMethodDescriptor(annotateAssessmentMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<AnnotateAssessmentRequest>() {
-                      @Override
-                      public Map<String, String> extract(AnnotateAssessmentRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put("name", String.valueOf(request.getName()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put("name", String.valueOf(request.getName()));
+                      return params.build();
                     })
                 .build();
     GrpcCallSettings<CreateKeyRequest, Key> createKeyTransportSettings =
         GrpcCallSettings.<CreateKeyRequest, Key>newBuilder()
             .setMethodDescriptor(createKeyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateKeyRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateKeyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("parent", String.valueOf(request.getParent()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("parent", String.valueOf(request.getParent()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<ListKeysRequest, ListKeysResponse> listKeysTransportSettings =
         GrpcCallSettings.<ListKeysRequest, ListKeysResponse>newBuilder()
             .setMethodDescriptor(listKeysMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListKeysRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListKeysRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("parent", String.valueOf(request.getParent()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("parent", String.valueOf(request.getParent()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<GetKeyRequest, Key> getKeyTransportSettings =
         GrpcCallSettings.<GetKeyRequest, Key>newBuilder()
             .setMethodDescriptor(getKeyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetKeyRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetKeyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<UpdateKeyRequest, Key> updateKeyTransportSettings =
         GrpcCallSettings.<UpdateKeyRequest, Key>newBuilder()
             .setMethodDescriptor(updateKeyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateKeyRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateKeyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("key.name", String.valueOf(request.getKey().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("key.name", String.valueOf(request.getKey().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<DeleteKeyRequest, Empty> deleteKeyTransportSettings =
         GrpcCallSettings.<DeleteKeyRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteKeyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteKeyRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteKeyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
 
diff --git a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1StubSettings.java b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1StubSettings.java
index a1f6e179..8d87cc16 100644
--- a/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1StubSettings.java
+++ b/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1StubSettings.java
@@ -431,14 +431,13 @@ private static Builder initDefaults(Builder builder) {
       return builder;
     }
 
-    // NEXT_MAJOR_VER: remove 'throws Exception'.
     /**
      * Applies the given settings updater function to all of the unary API methods in this service.
      *
      * <p>Note: This method does not support applying settings to streaming methods.
      */
     public Builder applyToAllUnaryMethods(
-        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) throws Exception {
+        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) {
       super.applyToAllUnaryMethods(unaryMethodSettingsBuilders, settingsUpdater);
       return this;
     }