code: public int append(String stringValue, boolean nullTerminated) {
          if (stringValue != null)
              append(stringValue.getBytes());
          if (nullTerminated)
              append((byte)0);
          return bytesLength;
      }
docs: Append <tt>String</tt> value.
  
  @param stringValue
  @param nullTerminated <tt>true<tt> means C-Octet String.
  The default value is <tt>true</tt>.
  @return the latest length of the buffer.