@Test
public void testCreateBulkMutation() {

  BulkMutation mockBulkMutation = Mockito.mock(BulkMutation.class);
  when(bigtableSession.createBulkMutation(Mockito.<BigtableTableName>any()))
      .thenReturn(mockBulkMutation);
  assertTrue(dataClientWrapper.createBulkMutation(TABLE_ID) instanceof BulkMutationClassicApi);
  verify(bigtableSession).createBulkMutation(Mockito.<BigtableTableName>any());
}