if (getNameSupport() == null) return;
  private void unregisterMailData ()  {    if (myMailData == null) return;  // no data to unregister    //  Name support not available till after transport construction  -- still, in 9.0.0?    if (getNameSupport() == null) return;      //  Update the name server    MessageAddress nodeAddress = getNameSupport().getNodeMessageAddress();    getNameSupport().unregisterAgentInNameServer (myMailData, nodeAddress, PROTOCOL_TYPE);  }