@Test
public void testHashCode() throws Exception {

  Assert.assertTrue(COLUMN.hashCode() != COLUMN_WITH_ANOTHER_TABLE.hashCode());
  Assert.assertTrue(COLUMN.hashCode() != COLUMN_WITH_ANOTHER_ROW.hashCode());
  Assert.assertTrue(COLUMN.hashCode() != COLUMN_WITH_ANOTHER_FAMILY.hashCode());
  Assert.assertTrue(COLUMN.hashCode() != COLUMN_WITH_ANOTHER_QUALIFIER.hashCode());
}