code: private byte[] columnNameAsByteArray(String column, String columnFamily)
      {
          return TBaseHelper.byteBufferToByteArray(columnNameAsBytes(column, columnFamily));
      }
docs: Converts column name into byte[] according to comparator type
  @param column - column name from parser
  @param columnFamily - column family name from parser
  @return bytes[] - into which column name was converted according to comparator type