docs: @Override
      public long getDeliveryDelay() {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(tc, "getDeliveryDelay");
  
          long deliveryDelay = getMessageItem().getDeliveryDelay();
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(tc, "getDeliveryDelay", new Long(deliveryDelay));
  
          return deliveryDelay;
      }