diff --git a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceClient.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceClient.java
index ee57bc796..17ca174a0 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceClient.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.asset.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;
@@ -1510,14 +1509,7 @@ public static ApiFuture<ListAssetsPagedResponse> createAsync(
       ApiFuture<ListAssetsPage> futurePage =
           ListAssetsPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
-          futurePage,
-          new ApiFunction<ListAssetsPage, ListAssetsPagedResponse>() {
-            @Override
-            public ListAssetsPagedResponse apply(ListAssetsPage input) {
-              return new ListAssetsPagedResponse(input);
-            }
-          },
-          MoreExecutors.directExecutor());
+          futurePage, input -> new ListAssetsPagedResponse(input), MoreExecutors.directExecutor());
     }
 
     private ListAssetsPagedResponse(ListAssetsPage page) {
@@ -1592,12 +1584,7 @@ public static ApiFuture<SearchAllResourcesPagedResponse> createAsync(
           SearchAllResourcesPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<SearchAllResourcesPage, SearchAllResourcesPagedResponse>() {
-            @Override
-            public SearchAllResourcesPagedResponse apply(SearchAllResourcesPage input) {
-              return new SearchAllResourcesPagedResponse(input);
-            }
-          },
+          input -> new SearchAllResourcesPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
@@ -1682,12 +1669,7 @@ public static ApiFuture<SearchAllIamPoliciesPagedResponse> createAsync(
           SearchAllIamPoliciesPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<SearchAllIamPoliciesPage, SearchAllIamPoliciesPagedResponse>() {
-            @Override
-            public SearchAllIamPoliciesPagedResponse apply(SearchAllIamPoliciesPage input) {
-              return new SearchAllIamPoliciesPagedResponse(input);
-            }
-          },
+          input -> new SearchAllIamPoliciesPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
diff --git a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceSettings.java
index d5b8025e8..127a059df 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceSettings.java
@@ -249,14 +249,13 @@ public AssetServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((AssetServiceStubSettings.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-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
index c5d57bac5..9c7ac8a9f 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
@@ -844,14 +844,13 @@ 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-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceStub.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceStub.java
index 97ccbc764..6971963b5 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceStub.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceStub.java
@@ -26,7 +26,6 @@
 import com.google.api.gax.grpc.GrpcStubCallableFactory;
 import com.google.api.gax.rpc.ClientContext;
 import com.google.api.gax.rpc.OperationCallable;
-import com.google.api.gax.rpc.RequestParamsExtractor;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.asset.v1.AnalyzeIamPolicyLongrunningMetadata;
 import com.google.cloud.asset.v1.AnalyzeIamPolicyLongrunningRequest;
@@ -59,7 +58,6 @@
 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;
 
@@ -271,26 +269,20 @@ protected GrpcAssetServiceStub(
         GrpcCallSettings.<ExportAssetsRequest, Operation>newBuilder()
             .setMethodDescriptor(exportAssetsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ExportAssetsRequest>() {
-                  @Override
-                  public Map<String, String> extract(ExportAssetsRequest 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<ListAssetsRequest, ListAssetsResponse> listAssetsTransportSettings =
         GrpcCallSettings.<ListAssetsRequest, ListAssetsResponse>newBuilder()
             .setMethodDescriptor(listAssetsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListAssetsRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListAssetsRequest 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<BatchGetAssetsHistoryRequest, BatchGetAssetsHistoryResponse>
@@ -299,78 +291,60 @@ public Map<String, String> extract(ListAssetsRequest request) {
                 .<BatchGetAssetsHistoryRequest, BatchGetAssetsHistoryResponse>newBuilder()
                 .setMethodDescriptor(batchGetAssetsHistoryMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<BatchGetAssetsHistoryRequest>() {
-                      @Override
-                      public Map<String, String> extract(BatchGetAssetsHistoryRequest 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<CreateFeedRequest, Feed> createFeedTransportSettings =
         GrpcCallSettings.<CreateFeedRequest, Feed>newBuilder()
             .setMethodDescriptor(createFeedMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateFeedRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateFeedRequest 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<GetFeedRequest, Feed> getFeedTransportSettings =
         GrpcCallSettings.<GetFeedRequest, Feed>newBuilder()
             .setMethodDescriptor(getFeedMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetFeedRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetFeedRequest 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<ListFeedsRequest, ListFeedsResponse> listFeedsTransportSettings =
         GrpcCallSettings.<ListFeedsRequest, ListFeedsResponse>newBuilder()
             .setMethodDescriptor(listFeedsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListFeedsRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListFeedsRequest 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<UpdateFeedRequest, Feed> updateFeedTransportSettings =
         GrpcCallSettings.<UpdateFeedRequest, Feed>newBuilder()
             .setMethodDescriptor(updateFeedMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateFeedRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateFeedRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("feed.name", String.valueOf(request.getFeed().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("feed.name", String.valueOf(request.getFeed().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<DeleteFeedRequest, Empty> deleteFeedTransportSettings =
         GrpcCallSettings.<DeleteFeedRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteFeedMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteFeedRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteFeedRequest 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<SearchAllResourcesRequest, SearchAllResourcesResponse>
@@ -378,13 +352,10 @@ public Map<String, String> extract(DeleteFeedRequest request) {
             GrpcCallSettings.<SearchAllResourcesRequest, SearchAllResourcesResponse>newBuilder()
                 .setMethodDescriptor(searchAllResourcesMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<SearchAllResourcesRequest>() {
-                      @Override
-                      public Map<String, String> extract(SearchAllResourcesRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put("scope", String.valueOf(request.getScope()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put("scope", String.valueOf(request.getScope()));
+                      return params.build();
                     })
                 .build();
     GrpcCallSettings<SearchAllIamPoliciesRequest, SearchAllIamPoliciesResponse>
@@ -392,13 +363,10 @@ public Map<String, String> extract(SearchAllResourcesRequest request) {
             GrpcCallSettings.<SearchAllIamPoliciesRequest, SearchAllIamPoliciesResponse>newBuilder()
                 .setMethodDescriptor(searchAllIamPoliciesMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<SearchAllIamPoliciesRequest>() {
-                      @Override
-                      public Map<String, String> extract(SearchAllIamPoliciesRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put("scope", String.valueOf(request.getScope()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put("scope", String.valueOf(request.getScope()));
+                      return params.build();
                     })
                 .build();
     GrpcCallSettings<AnalyzeIamPolicyRequest, AnalyzeIamPolicyResponse>
@@ -406,15 +374,12 @@ public Map<String, String> extract(SearchAllIamPoliciesRequest request) {
             GrpcCallSettings.<AnalyzeIamPolicyRequest, AnalyzeIamPolicyResponse>newBuilder()
                 .setMethodDescriptor(analyzeIamPolicyMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<AnalyzeIamPolicyRequest>() {
-                      @Override
-                      public Map<String, String> extract(AnalyzeIamPolicyRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put(
-                            "analysis_query.scope",
-                            String.valueOf(request.getAnalysisQuery().getScope()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put(
+                          "analysis_query.scope",
+                          String.valueOf(request.getAnalysisQuery().getScope()));
+                      return params.build();
                     })
                 .build();
     GrpcCallSettings<AnalyzeIamPolicyLongrunningRequest, Operation>
@@ -422,29 +387,22 @@ public Map<String, String> extract(AnalyzeIamPolicyRequest request) {
             GrpcCallSettings.<AnalyzeIamPolicyLongrunningRequest, Operation>newBuilder()
                 .setMethodDescriptor(analyzeIamPolicyLongrunningMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<AnalyzeIamPolicyLongrunningRequest>() {
-                      @Override
-                      public Map<String, String> extract(
-                          AnalyzeIamPolicyLongrunningRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put(
-                            "analysis_query.scope",
-                            String.valueOf(request.getAnalysisQuery().getScope()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put(
+                          "analysis_query.scope",
+                          String.valueOf(request.getAnalysisQuery().getScope()));
+                      return params.build();
                     })
                 .build();
     GrpcCallSettings<AnalyzeMoveRequest, AnalyzeMoveResponse> analyzeMoveTransportSettings =
         GrpcCallSettings.<AnalyzeMoveRequest, AnalyzeMoveResponse>newBuilder()
             .setMethodDescriptor(analyzeMoveMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<AnalyzeMoveRequest>() {
-                  @Override
-                  public Map<String, String> extract(AnalyzeMoveRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("resource", String.valueOf(request.getResource()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("resource", String.valueOf(request.getResource()));
+                  return params.build();
                 })
             .build();
 
diff --git a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceClient.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceClient.java
index 9e34889bb..14756e192 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceClient.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.asset.v1p1beta1;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -509,12 +508,7 @@ public static ApiFuture<SearchAllResourcesPagedResponse> createAsync(
           SearchAllResourcesPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<SearchAllResourcesPage, SearchAllResourcesPagedResponse>() {
-            @Override
-            public SearchAllResourcesPagedResponse apply(SearchAllResourcesPage input) {
-              return new SearchAllResourcesPagedResponse(input);
-            }
-          },
+          input -> new SearchAllResourcesPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
@@ -599,12 +593,7 @@ public static ApiFuture<SearchAllIamPoliciesPagedResponse> createAsync(
           SearchAllIamPoliciesPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<SearchAllIamPoliciesPage, SearchAllIamPoliciesPagedResponse>() {
-            @Override
-            public SearchAllIamPoliciesPagedResponse apply(SearchAllIamPoliciesPage input) {
-              return new SearchAllIamPoliciesPagedResponse(input);
-            }
-          },
+          input -> new SearchAllIamPoliciesPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
diff --git a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceSettings.java
index c81703909..82ca8fbda 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceSettings.java
@@ -171,14 +171,13 @@ public AssetServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((AssetServiceStubSettings.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-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStubSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStubSettings.java
index fa8de1c26..a889b6a2d 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStubSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStubSettings.java
@@ -429,14 +429,13 @@ 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-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceStub.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceStub.java
index dcbbc91bc..93e726b95 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceStub.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceStub.java
@@ -25,7 +25,6 @@
 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.cloud.asset.v1p1beta1.SearchAllIamPoliciesRequest;
 import com.google.cloud.asset.v1p1beta1.SearchAllIamPoliciesResponse;
@@ -36,7 +35,6 @@
 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;
 
@@ -127,13 +125,10 @@ protected GrpcAssetServiceStub(
             GrpcCallSettings.<SearchAllResourcesRequest, SearchAllResourcesResponse>newBuilder()
                 .setMethodDescriptor(searchAllResourcesMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<SearchAllResourcesRequest>() {
-                      @Override
-                      public Map<String, String> extract(SearchAllResourcesRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put("scope", String.valueOf(request.getScope()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put("scope", String.valueOf(request.getScope()));
+                      return params.build();
                     })
                 .build();
     GrpcCallSettings<SearchAllIamPoliciesRequest, SearchAllIamPoliciesResponse>
@@ -141,13 +136,10 @@ public Map<String, String> extract(SearchAllResourcesRequest request) {
             GrpcCallSettings.<SearchAllIamPoliciesRequest, SearchAllIamPoliciesResponse>newBuilder()
                 .setMethodDescriptor(searchAllIamPoliciesMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<SearchAllIamPoliciesRequest>() {
-                      @Override
-                      public Map<String, String> extract(SearchAllIamPoliciesRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put("scope", String.valueOf(request.getScope()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put("scope", String.valueOf(request.getScope()));
+                      return params.build();
                     })
                 .build();
 
diff --git a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceSettings.java
index ea4451ecc..05ebf547a 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceSettings.java
@@ -177,14 +177,13 @@ public AssetServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((AssetServiceStubSettings.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-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStubSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStubSettings.java
index 6f93a4537..be2e5e9b9 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStubSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStubSettings.java
@@ -333,14 +333,13 @@ 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-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceStub.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceStub.java
index e9d702d76..9aeb61b45 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceStub.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceStub.java
@@ -22,7 +22,6 @@
 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.cloud.asset.v1p2beta1.CreateFeedRequest;
 import com.google.cloud.asset.v1p2beta1.DeleteFeedRequest;
@@ -37,7 +36,6 @@
 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;
 
@@ -143,65 +141,50 @@ protected GrpcAssetServiceStub(
         GrpcCallSettings.<CreateFeedRequest, Feed>newBuilder()
             .setMethodDescriptor(createFeedMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateFeedRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateFeedRequest 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<GetFeedRequest, Feed> getFeedTransportSettings =
         GrpcCallSettings.<GetFeedRequest, Feed>newBuilder()
             .setMethodDescriptor(getFeedMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetFeedRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetFeedRequest 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<ListFeedsRequest, ListFeedsResponse> listFeedsTransportSettings =
         GrpcCallSettings.<ListFeedsRequest, ListFeedsResponse>newBuilder()
             .setMethodDescriptor(listFeedsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListFeedsRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListFeedsRequest 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<UpdateFeedRequest, Feed> updateFeedTransportSettings =
         GrpcCallSettings.<UpdateFeedRequest, Feed>newBuilder()
             .setMethodDescriptor(updateFeedMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateFeedRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateFeedRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("feed.name", String.valueOf(request.getFeed().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("feed.name", String.valueOf(request.getFeed().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<DeleteFeedRequest, Empty> deleteFeedTransportSettings =
         GrpcCallSettings.<DeleteFeedRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteFeedMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteFeedRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteFeedRequest 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-asset/src/main/java/com/google/cloud/asset/v1p4beta1/AssetServiceSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p4beta1/AssetServiceSettings.java
index 361dff4fa..1f64fc272 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p4beta1/AssetServiceSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p4beta1/AssetServiceSettings.java
@@ -175,14 +175,13 @@ public AssetServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((AssetServiceStubSettings.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-asset/src/main/java/com/google/cloud/asset/v1p4beta1/stub/AssetServiceStubSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p4beta1/stub/AssetServiceStubSettings.java
index a8ce42423..56758b14b 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p4beta1/stub/AssetServiceStubSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p4beta1/stub/AssetServiceStubSettings.java
@@ -335,14 +335,13 @@ 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-asset/src/main/java/com/google/cloud/asset/v1p4beta1/stub/GrpcAssetServiceStub.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p4beta1/stub/GrpcAssetServiceStub.java
index 8907df6d6..49f058350 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p4beta1/stub/GrpcAssetServiceStub.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p4beta1/stub/GrpcAssetServiceStub.java
@@ -23,7 +23,6 @@
 import com.google.api.gax.grpc.GrpcStubCallableFactory;
 import com.google.api.gax.rpc.ClientContext;
 import com.google.api.gax.rpc.OperationCallable;
-import com.google.api.gax.rpc.RequestParamsExtractor;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.asset.v1p4beta1.AnalyzeIamPolicyRequest;
 import com.google.cloud.asset.v1p4beta1.AnalyzeIamPolicyResponse;
@@ -35,7 +34,6 @@
 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;
 
@@ -127,15 +125,12 @@ protected GrpcAssetServiceStub(
             GrpcCallSettings.<AnalyzeIamPolicyRequest, AnalyzeIamPolicyResponse>newBuilder()
                 .setMethodDescriptor(analyzeIamPolicyMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<AnalyzeIamPolicyRequest>() {
-                      @Override
-                      public Map<String, String> extract(AnalyzeIamPolicyRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put(
-                            "analysis_query.parent",
-                            String.valueOf(request.getAnalysisQuery().getParent()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put(
+                          "analysis_query.parent",
+                          String.valueOf(request.getAnalysisQuery().getParent()));
+                      return params.build();
                     })
                 .build();
     GrpcCallSettings<ExportIamPolicyAnalysisRequest, Operation>
@@ -143,15 +138,12 @@ public Map<String, String> extract(AnalyzeIamPolicyRequest request) {
             GrpcCallSettings.<ExportIamPolicyAnalysisRequest, Operation>newBuilder()
                 .setMethodDescriptor(exportIamPolicyAnalysisMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<ExportIamPolicyAnalysisRequest>() {
-                      @Override
-                      public Map<String, String> extract(ExportIamPolicyAnalysisRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put(
-                            "analysis_query.parent",
-                            String.valueOf(request.getAnalysisQuery().getParent()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put(
+                          "analysis_query.parent",
+                          String.valueOf(request.getAnalysisQuery().getParent()));
+                      return params.build();
                     })
                 .build();
 
diff --git a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceClient.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceClient.java
index 098df1722..dfb14d73e 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceClient.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.asset.v1p5beta1;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -296,14 +295,7 @@ public static ApiFuture<ListAssetsPagedResponse> createAsync(
       ApiFuture<ListAssetsPage> futurePage =
           ListAssetsPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
-          futurePage,
-          new ApiFunction<ListAssetsPage, ListAssetsPagedResponse>() {
-            @Override
-            public ListAssetsPagedResponse apply(ListAssetsPage input) {
-              return new ListAssetsPagedResponse(input);
-            }
-          },
-          MoreExecutors.directExecutor());
+          futurePage, input -> new ListAssetsPagedResponse(input), MoreExecutors.directExecutor());
     }
 
     private ListAssetsPagedResponse(ListAssetsPage page) {
diff --git a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceSettings.java
index bc019eb22..d899b37b5 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceSettings.java
@@ -160,14 +160,13 @@ public AssetServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((AssetServiceStubSettings.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-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStubSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStubSettings.java
index d9f69ab9c..a1873eb3c 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStubSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStubSettings.java
@@ -314,14 +314,13 @@ 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-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceStub.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceStub.java
index f6aa1a9e8..8d8f23844 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceStub.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceStub.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.cloud.asset.v1p5beta1.ListAssetsRequest;
 import com.google.cloud.asset.v1p5beta1.ListAssetsResponse;
@@ -33,7 +32,6 @@
 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;
 
@@ -104,13 +102,10 @@ protected GrpcAssetServiceStub(
         GrpcCallSettings.<ListAssetsRequest, ListAssetsResponse>newBuilder()
             .setMethodDescriptor(listAssetsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListAssetsRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListAssetsRequest 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();
 
diff --git a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceSettings.java
index 003eab5bc..efc86c20c 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceSettings.java
@@ -164,14 +164,13 @@ public AssetServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((AssetServiceStubSettings.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-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStubSettings.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStubSettings.java
index dbd8bbe36..93b117b35 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStubSettings.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStubSettings.java
@@ -291,14 +291,13 @@ 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-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceStub.java b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceStub.java
index 4eda47f3f..92655bae4 100644
--- a/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceStub.java
+++ b/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceStub.java
@@ -23,7 +23,6 @@
 import com.google.api.gax.grpc.GrpcStubCallableFactory;
 import com.google.api.gax.rpc.ClientContext;
 import com.google.api.gax.rpc.OperationCallable;
-import com.google.api.gax.rpc.RequestParamsExtractor;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.asset.v1p7beta1.ExportAssetsRequest;
 import com.google.cloud.asset.v1p7beta1.ExportAssetsResponse;
@@ -33,7 +32,6 @@
 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;
 
@@ -105,13 +103,10 @@ protected GrpcAssetServiceStub(
         GrpcCallSettings.<ExportAssetsRequest, Operation>newBuilder()
             .setMethodDescriptor(exportAssetsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ExportAssetsRequest>() {
-                  @Override
-                  public Map<String, String> extract(ExportAssetsRequest 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();