code: public final void xmlRequestWriteOn(FormattedWriter writer) throws IOException, NotInMessageStore
      {
          Membership membership = _getMembership();
          if (null == membership)
          {
              throw new NotInMessageStore();
          }
          if (null != membership)
          {
              membership.requestXmlWriteOn(writer);
              writer.flush();
          }
      }
docs: Request that the receiver prints its xml representation
  (recursively) onto the given writer).
  
  @param writer
  @throws IOException
  @throws NotInMessageStore