diff --git a/packages/google-cloud-bigquery-storage/protos/protos.d.ts b/packages/google-cloud-bigquery-storage/protos/protos.d.ts
index 619dc695897..4ab3a82b13b 100644
--- a/packages/google-cloud-bigquery-storage/protos/protos.d.ts
+++ b/packages/google-cloud-bigquery-storage/protos/protos.d.ts
@@ -4197,19 +4197,19 @@ export namespace google {
             public selector: string;
 
             /** HttpRule get. */
-            public get: string;
+            public get?: (string|null);
 
             /** HttpRule put. */
-            public put: string;
+            public put?: (string|null);
 
             /** HttpRule post. */
-            public post: string;
+            public post?: (string|null);
 
             /** HttpRule delete. */
-            public delete: string;
+            public delete?: (string|null);
 
             /** HttpRule patch. */
-            public patch: string;
+            public patch?: (string|null);
 
             /** HttpRule custom. */
             public custom?: (google.api.ICustomHttpPattern|null);
diff --git a/packages/google-cloud-bigquery-storage/protos/protos.js b/packages/google-cloud-bigquery-storage/protos/protos.js
index 6f315f5ffad..a948d7dd4df 100644
--- a/packages/google-cloud-bigquery-storage/protos/protos.js
+++ b/packages/google-cloud-bigquery-storage/protos/protos.js
@@ -9799,43 +9799,43 @@
     
                 /**
                  * HttpRule get.
-                 * @member {string} get
+                 * @member {string|null|undefined} get
                  * @memberof google.api.HttpRule
                  * @instance
                  */
-                HttpRule.prototype.get = "";
+                HttpRule.prototype.get = null;
     
                 /**
                  * HttpRule put.
-                 * @member {string} put
+                 * @member {string|null|undefined} put
                  * @memberof google.api.HttpRule
                  * @instance
                  */
-                HttpRule.prototype.put = "";
+                HttpRule.prototype.put = null;
     
                 /**
                  * HttpRule post.
-                 * @member {string} post
+                 * @member {string|null|undefined} post
                  * @memberof google.api.HttpRule
                  * @instance
                  */
-                HttpRule.prototype.post = "";
+                HttpRule.prototype.post = null;
     
                 /**
                  * HttpRule delete.
-                 * @member {string} delete
+                 * @member {string|null|undefined} delete
                  * @memberof google.api.HttpRule
                  * @instance
                  */
-                HttpRule.prototype["delete"] = "";
+                HttpRule.prototype["delete"] = null;
     
                 /**
                  * HttpRule patch.
-                 * @member {string} patch
+                 * @member {string|null|undefined} patch
                  * @memberof google.api.HttpRule
                  * @instance
                  */
-                HttpRule.prototype.patch = "";
+                HttpRule.prototype.patch = null;
     
                 /**
                  * HttpRule custom.
diff --git a/packages/google-cloud-bigquery-storage/src/v1/big_query_read_client.ts b/packages/google-cloud-bigquery-storage/src/v1/big_query_read_client.ts
index a5d7db865c2..f25c074a4f8 100644
--- a/packages/google-cloud-bigquery-storage/src/v1/big_query_read_client.ts
+++ b/packages/google-cloud-bigquery-storage/src/v1/big_query_read_client.ts
@@ -230,13 +230,14 @@ export class BigQueryReadClient {
     ];
     for (const methodName of bigQueryReadStubMethods) {
       const callPromise = this.bigQueryReadStub.then(
-        stub => (...args: Array<{}>) => {
-          if (this._terminated) {
-            return Promise.reject('The client has already been closed.');
-          }
-          const func = stub[methodName];
-          return func.apply(stub, args);
-        },
+        stub =>
+          (...args: Array<{}>) => {
+            if (this._terminated) {
+              return Promise.reject('The client has already been closed.');
+            }
+            const func = stub[methodName];
+            return func.apply(stub, args);
+          },
         (err: Error | null | undefined) => () => {
           throw err;
         }
@@ -432,11 +433,10 @@ export class BigQueryReadClient {
     options = options || {};
     options.otherArgs = options.otherArgs || {};
     options.otherArgs.headers = options.otherArgs.headers || {};
-    options.otherArgs.headers[
-      'x-goog-request-params'
-    ] = gax.routingHeader.fromParams({
-      'read_session.table': request.readSession!.table || '',
-    });
+    options.otherArgs.headers['x-goog-request-params'] =
+      gax.routingHeader.fromParams({
+        'read_session.table': request.readSession!.table || '',
+      });
     this.initialize();
     return this.innerApiCalls.createReadSession(request, options, callback);
   }
@@ -549,11 +549,10 @@ export class BigQueryReadClient {
     options = options || {};
     options.otherArgs = options.otherArgs || {};
     options.otherArgs.headers = options.otherArgs.headers || {};
-    options.otherArgs.headers[
-      'x-goog-request-params'
-    ] = gax.routingHeader.fromParams({
-      name: request.name || '',
-    });
+    options.otherArgs.headers['x-goog-request-params'] =
+      gax.routingHeader.fromParams({
+        name: request.name || '',
+      });
     this.initialize();
     return this.innerApiCalls.splitReadStream(request, options, callback);
   }
@@ -595,11 +594,10 @@ export class BigQueryReadClient {
     options = options || {};
     options.otherArgs = options.otherArgs || {};
     options.otherArgs.headers = options.otherArgs.headers || {};
-    options.otherArgs.headers[
-      'x-goog-request-params'
-    ] = gax.routingHeader.fromParams({
-      read_stream: request.readStream || '',
-    });
+    options.otherArgs.headers['x-goog-request-params'] =
+      gax.routingHeader.fromParams({
+        read_stream: request.readStream || '',
+      });
     this.initialize();
     return this.innerApiCalls.readRows(request, options);
   }
diff --git a/packages/google-cloud-bigquery-storage/src/v1beta1/big_query_storage_client.ts b/packages/google-cloud-bigquery-storage/src/v1beta1/big_query_storage_client.ts
index da6f81c04e4..4defcb909f4 100644
--- a/packages/google-cloud-bigquery-storage/src/v1beta1/big_query_storage_client.ts
+++ b/packages/google-cloud-bigquery-storage/src/v1beta1/big_query_storage_client.ts
@@ -233,13 +233,14 @@ export class BigQueryStorageClient {
     ];
     for (const methodName of bigQueryStorageStubMethods) {
       const callPromise = this.bigQueryStorageStub.then(
-        stub => (...args: Array<{}>) => {
-          if (this._terminated) {
-            return Promise.reject('The client has already been closed.');
-          }
-          const func = stub[methodName];
-          return func.apply(stub, args);
-        },
+        stub =>
+          (...args: Array<{}>) => {
+            if (this._terminated) {
+              return Promise.reject('The client has already been closed.');
+            }
+            const func = stub[methodName];
+            return func.apply(stub, args);
+          },
         (err: Error | null | undefined) => () => {
           throw err;
         }
@@ -437,12 +438,11 @@ export class BigQueryStorageClient {
     options = options || {};
     options.otherArgs = options.otherArgs || {};
     options.otherArgs.headers = options.otherArgs.headers || {};
-    options.otherArgs.headers[
-      'x-goog-request-params'
-    ] = gax.routingHeader.fromParams({
-      'table_reference.project_id': request.tableReference!.projectId || '',
-      'table_reference.dataset_id': request.tableReference!.datasetId || '',
-    });
+    options.otherArgs.headers['x-goog-request-params'] =
+      gax.routingHeader.fromParams({
+        'table_reference.project_id': request.tableReference!.projectId || '',
+        'table_reference.dataset_id': request.tableReference!.datasetId || '',
+      });
     this.initialize();
     return this.innerApiCalls.createReadSession(request, options, callback);
   }
@@ -543,11 +543,10 @@ export class BigQueryStorageClient {
     options = options || {};
     options.otherArgs = options.otherArgs || {};
     options.otherArgs.headers = options.otherArgs.headers || {};
-    options.otherArgs.headers[
-      'x-goog-request-params'
-    ] = gax.routingHeader.fromParams({
-      'session.name': request.session!.name || '',
-    });
+    options.otherArgs.headers['x-goog-request-params'] =
+      gax.routingHeader.fromParams({
+        'session.name': request.session!.name || '',
+      });
     this.initialize();
     return this.innerApiCalls.batchCreateReadSessionStreams(
       request,
@@ -658,11 +657,10 @@ export class BigQueryStorageClient {
     options = options || {};
     options.otherArgs = options.otherArgs || {};
     options.otherArgs.headers = options.otherArgs.headers || {};
-    options.otherArgs.headers[
-      'x-goog-request-params'
-    ] = gax.routingHeader.fromParams({
-      'stream.name': request.stream!.name || '',
-    });
+    options.otherArgs.headers['x-goog-request-params'] =
+      gax.routingHeader.fromParams({
+        'stream.name': request.stream!.name || '',
+      });
     this.initialize();
     return this.innerApiCalls.finalizeStream(request, options, callback);
   }
@@ -776,11 +774,10 @@ export class BigQueryStorageClient {
     options = options || {};
     options.otherArgs = options.otherArgs || {};
     options.otherArgs.headers = options.otherArgs.headers || {};
-    options.otherArgs.headers[
-      'x-goog-request-params'
-    ] = gax.routingHeader.fromParams({
-      'original_stream.name': request.originalStream!.name || '',
-    });
+    options.otherArgs.headers['x-goog-request-params'] =
+      gax.routingHeader.fromParams({
+        'original_stream.name': request.originalStream!.name || '',
+      });
     this.initialize();
     return this.innerApiCalls.splitReadStream(request, options, callback);
   }
@@ -822,11 +819,10 @@ export class BigQueryStorageClient {
     options = options || {};
     options.otherArgs = options.otherArgs || {};
     options.otherArgs.headers = options.otherArgs.headers || {};
-    options.otherArgs.headers[
-      'x-goog-request-params'
-    ] = gax.routingHeader.fromParams({
-      'read_position.stream.name': request.readPosition!.stream!.name || '',
-    });
+    options.otherArgs.headers['x-goog-request-params'] =
+      gax.routingHeader.fromParams({
+        'read_position.stream.name': request.readPosition!.stream!.name || '',
+      });
     this.initialize();
     return this.innerApiCalls.readRows(request, options);
   }
diff --git a/packages/google-cloud-bigquery-storage/test/gapic_big_query_read_v1.ts b/packages/google-cloud-bigquery-storage/test/gapic_big_query_read_v1.ts
index 6d69543ebaf..e7feeb4724d 100644
--- a/packages/google-cloud-bigquery-storage/test/gapic_big_query_read_v1.ts
+++ b/packages/google-cloud-bigquery-storage/test/gapic_big_query_read_v1.ts
@@ -28,10 +28,9 @@ import {PassThrough} from 'stream';
 import {protobuf} from 'google-gax';
 
 function generateSampleMessage<T extends object>(instance: T) {
-  const filledObject = (instance.constructor as typeof protobuf.Message).toObject(
-    instance as protobuf.Message<T>,
-    {defaults: true}
-  );
+  const filledObject = (
+    instance.constructor as typeof protobuf.Message
+  ).toObject(instance as protobuf.Message<T>, {defaults: true});
   return (instance.constructor as typeof protobuf.Message).fromObject(
     filledObject
   ) as T;
@@ -209,9 +208,8 @@ describe('v1.BigQueryReadClient', () => {
       const expectedResponse = generateSampleMessage(
         new protos.google.cloud.bigquery.storage.v1.ReadSession()
       );
-      client.innerApiCalls.createReadSession = stubSimpleCallWithCallback(
-        expectedResponse
-      );
+      client.innerApiCalls.createReadSession =
+        stubSimpleCallWithCallback(expectedResponse);
       const promise = new Promise((resolve, reject) => {
         client.createReadSession(
           request,
@@ -322,9 +320,8 @@ describe('v1.BigQueryReadClient', () => {
       const expectedResponse = generateSampleMessage(
         new protos.google.cloud.bigquery.storage.v1.SplitReadStreamResponse()
       );
-      client.innerApiCalls.splitReadStream = stubSimpleCallWithCallback(
-        expectedResponse
-      );
+      client.innerApiCalls.splitReadStream =
+        stubSimpleCallWithCallback(expectedResponse);
       const promise = new Promise((resolve, reject) => {
         client.splitReadStream(
           request,
diff --git a/packages/google-cloud-bigquery-storage/test/gapic_big_query_storage_v1beta1.ts b/packages/google-cloud-bigquery-storage/test/gapic_big_query_storage_v1beta1.ts
index 471cebc8ec7..b4821b15682 100644
--- a/packages/google-cloud-bigquery-storage/test/gapic_big_query_storage_v1beta1.ts
+++ b/packages/google-cloud-bigquery-storage/test/gapic_big_query_storage_v1beta1.ts
@@ -28,10 +28,9 @@ import {PassThrough} from 'stream';
 import {protobuf} from 'google-gax';
 
 function generateSampleMessage<T extends object>(instance: T) {
-  const filledObject = (instance.constructor as typeof protobuf.Message).toObject(
-    instance as protobuf.Message<T>,
-    {defaults: true}
-  );
+  const filledObject = (
+    instance.constructor as typeof protobuf.Message
+  ).toObject(instance as protobuf.Message<T>, {defaults: true});
   return (instance.constructor as typeof protobuf.Message).fromObject(
     filledObject
   ) as T;
@@ -217,9 +216,8 @@ describe('v1beta1.BigQueryStorageClient', () => {
       const expectedResponse = generateSampleMessage(
         new protos.google.cloud.bigquery.storage.v1beta1.ReadSession()
       );
-      client.innerApiCalls.createReadSession = stubSimpleCallWithCallback(
-        expectedResponse
-      );
+      client.innerApiCalls.createReadSession =
+        stubSimpleCallWithCallback(expectedResponse);
       const promise = new Promise((resolve, reject) => {
         client.createReadSession(
           request,
@@ -303,9 +301,8 @@ describe('v1beta1.BigQueryStorageClient', () => {
       const expectedResponse = generateSampleMessage(
         new protos.google.cloud.bigquery.storage.v1beta1.BatchCreateReadSessionStreamsResponse()
       );
-      client.innerApiCalls.batchCreateReadSessionStreams = stubSimpleCall(
-        expectedResponse
-      );
+      client.innerApiCalls.batchCreateReadSessionStreams =
+        stubSimpleCall(expectedResponse);
       const [response] = await client.batchCreateReadSessionStreams(request);
       assert.deepStrictEqual(response, expectedResponse);
       assert(
@@ -337,9 +334,8 @@ describe('v1beta1.BigQueryStorageClient', () => {
       const expectedResponse = generateSampleMessage(
         new protos.google.cloud.bigquery.storage.v1beta1.BatchCreateReadSessionStreamsResponse()
       );
-      client.innerApiCalls.batchCreateReadSessionStreams = stubSimpleCallWithCallback(
-        expectedResponse
-      );
+      client.innerApiCalls.batchCreateReadSessionStreams =
+        stubSimpleCallWithCallback(expectedResponse);
       const promise = new Promise((resolve, reject) => {
         client.batchCreateReadSessionStreams(
           request,
@@ -455,9 +451,8 @@ describe('v1beta1.BigQueryStorageClient', () => {
       const expectedResponse = generateSampleMessage(
         new protos.google.protobuf.Empty()
       );
-      client.innerApiCalls.finalizeStream = stubSimpleCallWithCallback(
-        expectedResponse
-      );
+      client.innerApiCalls.finalizeStream =
+        stubSimpleCallWithCallback(expectedResponse);
       const promise = new Promise((resolve, reject) => {
         client.finalizeStream(
           request,
@@ -570,9 +565,8 @@ describe('v1beta1.BigQueryStorageClient', () => {
       const expectedResponse = generateSampleMessage(
         new protos.google.cloud.bigquery.storage.v1beta1.SplitReadStreamResponse()
       );
-      client.innerApiCalls.splitReadStream = stubSimpleCallWithCallback(
-        expectedResponse
-      );
+      client.innerApiCalls.splitReadStream =
+        stubSimpleCallWithCallback(expectedResponse);
       const promise = new Promise((resolve, reject) => {
         client.splitReadStream(
           request,