docs: public int handleMessage(BaseMessage message)
      {
          if (message != null)
              if (message.getMessageHeader().getRegistryIDMatch() != null)    // My private message
          {
              strMessage = (String)message.get(StandardMessageResponseData.MESSAGE);
              synchronized (this)
              {
                  waiting = false;
                  this.notify();
              }
          }
          return super.handleMessage(message);
      }