code: private ByteBuffer columnNameAsBytes(String column, CfDef columnFamilyDef)
      {
          String comparatorClass = columnFamilyDef.comparator_type;
          return getBytesAccordingToType(column, getFormatType(comparatorClass));
      }
docs: Converts column name into byte[] according to comparator type
  @param column - column name from parser
  @param columnFamilyDef - column family from parser
  @return ByteBuffer bytes - into which column name was converted according to comparator type