@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());
}