{ return (MessageCallbackHandler)inv. getMetaData(MetaDataConstants.JMS, MetaDataConstants.MESSAGE_HANDLER);
{ ConsumerState state = (ConsumerState)((DelegateSupport)inv.getTargetObject()).getState(); return state.getMessageCallbackHandler();
   private MessageCallbackHandler getHandler(Invocation inv)   {      return (MessageCallbackHandler)inv.         getMetaData(MetaDataConstants.JMS, MetaDataConstants.MESSAGE_HANDLER);   }