code: public static ControlMessageFactory getControlMessageFactory() {
          if (TraceComponent.isAnyTracingEnabled()
              && tc.isEntryEnabled())
              SibTr.entry(tc, "getControlMessageFactory");
  
          if (_controlMessageFactory == null)
              _controlMessageFactory = (ControlMessageFactory) getSingletonInstance(SIMPConstants.CONTROL_MESSAGE_FACTORY);
  
          if (TraceComponent.isAnyTracingEnabled()
              && tc.isEntryEnabled())
              SibTr.exit(tc, "getControlMessageFactory", _controlMessageFactory);
          return _controlMessageFactory;
      }
docs: Creates the control message factory single instance
  
  @return the single instance of the control message factory.