code: public String getOriginatingBus()
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
          {
              SibTr.entry(this, tc, "getOriginatingBus");
              SibTr.exit(this, tc, "getOriginatingBus", _busName);
          }
          return _busName;
      }
docs: Gets the bus that the message was previously at.
  
  @return