chore(deps): upgrade gapic-generator-java to 2.7.0 and update gax-java to 2.16.0 (#119)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 446250659

Source-Link: googleapis/googleapis@dc4ef31

Source-Link: https://github.com/googleapis/googleapis-gen/commit/5fdda4ddfbab87998e77e4a453e0ff87986d2db8
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNWZkZGE0ZGRmYmFiODc5OThlNzdlNGE0NTNlMGZmODc5ODZkMmRiOCJ9

Author: gcf-owl-bot[bot]

google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationServiceClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -55,6 +55,8 @@
  * <p>For example, to set the total timeout of createMigrationWorkflow to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * MigrationServiceSettings.Builder migrationServiceSettingsBuilder =
  *     MigrationServiceSettings.newBuilder();
  * migrationServiceSettingsBuilder

google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationServiceSettings.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,6 +26,8 @@
  * <p>Sample for MigrationServiceClient:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * try (MigrationServiceClient migrationServiceClient = MigrationServiceClient.create()) {
  *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
  *   MigrationWorkflow migrationWorkflow = MigrationWorkflow.newBuilder().build();

google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/package-info.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/GrpcMigrationServiceCallableFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/GrpcMigrationServiceStub.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/MigrationServiceStub.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -81,6 +81,8 @@
  * <p>For example, to set the total timeout of createMigrationWorkflow to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * MigrationServiceStubSettings.Builder migrationServiceSettingsBuilder =
  *     MigrationServiceStubSettings.newBuilder();
  * migrationServiceSettingsBuilder

google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/MigrationServiceStubSettings.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -55,6 +55,8 @@
  * <p>For example, to set the total timeout of createMigrationWorkflow to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * MigrationServiceSettings.Builder migrationServiceSettingsBuilder =
  *     MigrationServiceSettings.newBuilder();
  * migrationServiceSettingsBuilder

google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationServiceClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,6 +24,8 @@
  * <p>Sample for MigrationServiceClient:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * try (MigrationServiceClient migrationServiceClient = MigrationServiceClient.create()) {
  *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
  *   MigrationWorkflow migrationWorkflow = MigrationWorkflow.newBuilder().build();