public UnaryCallSettings.Builder<AddGroupMigrationRequest, Operation>
        addGroupMigrationSettings() {
      return addGroupMigrationSettings;
    }
Returns the builder for the settings used for calls to addGroupMigration.
java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/VmMigrationStubSettings.java