@Test
public void testIsPreservedColumn() {

  Assert.assertFalse(ColumnUtil.isPreservedColumn(COLUMN));
  Assert.assertTrue(ColumnUtil.isPreservedColumn(ColumnUtil.getLockColumn(COLUMN)));
  Assert.assertTrue(ColumnUtil.isPreservedColumn(ColumnUtil.getPutColumn(COLUMN)));
  Assert.assertTrue(ColumnUtil.isPreservedColumn(ColumnUtil.getDeleteColumn(COLUMN)));
  Assert.assertTrue(ColumnUtil.isPreservedColumn(new Column(Bytes.toBytes("fa#mily"), QUALIFIER)));
  
  commitToDifferentFamily();
  Assert.assertTrue(ColumnUtil.isPreservedColumn(new Column(Bytes.toBytes("fa#mily"), QUALIFIER)));
  Assert.assertFalse(ColumnUtil.isPreservedColumn(new Column(FAMILY, Bytes.toBytes("qu#alifier"))));
}