code: public final void add (final OperationalTextKey textKey, final String value) {
  
          final String s = textKey.value() + KEY_VALUE_DELIMITER + value + PAIR_DELIMITER;
          resizeBuffer(s.length(), true);
          dataBuffer.put(s.getBytes());
  
          isDirty = true;
      }
docs: Add a given operation text keys with the given value to the key value pairs.
  
  @param textKey One of the valid operation text keys listed above.
  @param value The value of this operation text key.
  @see de.unikn.inf.disy.blockdebix.iscsi.parser.datasegment.OperationalTextKey