code: @Override
      public SIBUuid12 getProducerConnectionUuid()
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
          {
              SibTr.entry(this, tc, "getProducerConnectionUuid");
          }
  
          if (producerConnectionUuid == null)
          {
              JsMessage localMsg = getJSMessage(true);
              producerConnectionUuid = localMsg.getConnectionUuid();
          }
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
          {
              SibTr.exit(this, tc, "getProducerConnectionUuid", producerConnectionUuid);
          }
  
          return producerConnectionUuid;
      }
docs: Returns the producerConnectionUuid.
  Please note, this value may be null in the case of a p2p
  message.
  
  @return SIBUuid12