code: public static BigtableTableAdminClient create(
        @Nonnull String projectId,
        @Nonnull String instanceId,
        @Nonnull EnhancedBigtableTableAdminStub stub) {
      return new BigtableTableAdminClient(projectId, instanceId, stub);
    }
docs: Constructs an instance of BigtableTableAdminClient with the given instanceName and stub.