BigtableTableAdminGCJClient implements IBigtableTableAdminClient, AutoCloseable { @Override public Table modifyFamilies(ModifyColumnFamiliesRequest request) { return delegate.modifyFamilies(request); } BigtableTableAdminGCJClient(
      @Nonnull BigtableTableAdminClient delegate,
      @Nonnull BaseBigtableTableAdminClient baseAdminClient); @Override Table createTable(CreateTableRequest request); @Override ApiFuture<Table> createTableAsync(CreateTableRequest request); @Override Table getTable(String tableId); @Override ApiFuture<Table> getTableAsync(String tableId); @Override List<String> listTables(); @Override ApiFuture<List<String>> listTablesAsync(); @Override void deleteTable(String tableId); @Override ApiFuture<Void> deleteTableAsync(String tableId); @Override Table modifyFamilies(ModifyColumnFamiliesRequest request); @Override ApiFuture<Table> modifyFamiliesAsync(ModifyColumnFamiliesRequest request); @Override void dropRowRange(String tableId, String rowKeyPrefix); @Override void dropRowRange(String tableId, ByteString rowKeyPrefix); @Override ApiFuture<Void> dropRowRangeAsync(String tableId, String rowKeyPrefix); @Override ApiFuture<Void> dropRowRangeAsync(String tableId, ByteString rowKeyPrefix); @Override void dropAllRows(String tableId); @Override ApiFuture<Void> dropAllRowsAsync(String tableId); @Override ApiFuture<Operation> snapshotTableAsync(SnapshotTableRequest request); @Override ApiFuture<Snapshot> getSnapshotAsync(GetSnapshotRequest request); @Override ApiFuture<ListSnapshotsResponse> listSnapshotsAsync(ListSnapshotsRequest request); @Override ApiFuture<Void> deleteSnapshotAsync(DeleteSnapshotRequest request); @Override ApiFuture<Operation> createTableFromSnapshotAsync(CreateTableFromSnapshotRequest request); @Override void close();  }
@Test public void testModifyFamily() { ModifyColumnFamiliesRequest request = ModifyColumnFamiliesRequest.of(TABLE_ID).addFamily("first-family"); Table response = adminGCJClient.modifyFamilies(request); List<ColumnFamily> columnFamilies = response.getColumnFamilies(); assertEquals("first-family", columnFamilies.get(0).getId()); }