docs: @Override
      public PortletDelegationDispatcher createRequestDispatcher(
              PortletRequest portletRequest, String fName) {
          final IPortletDefinition portletDefinition =
                  this.portletDefinitionRegistry.getPortletDefinitionByFname(fName);
          final IPortletDefinitionId portletDefinitionId = portletDefinition.getPortletDefinitionId();
  
          return this.createRequestDispatcher(portletRequest, portletDefinitionId);
      }