@Override
 public void remove(String colFamily, byte[] rowKey) {
   Remove remove = new Remove();
   remove.setColFamily(colFamily);
   remove.setRowKey(rowKey);
   actions.add(remove);
 }
 @Override
 public void remove(String colFamily, byte[] rowKey, List<String> columnNames) {
   Remove remove = new Remove();
   remove.setColFamily(colFamily);
   remove.setRowKey(rowKey);
   remove.setColumns(columnNames);
   actions.add(remove);
 }