Hi Lukas, all, #isRestful is called by PRContext >> urlOn:, typically via the PRMenuRenderer (so, upon every page refresh), which delegates to the current Command, which, in the case of PRViewCommand, delegates in turn to its 'viewComponent'. To avoid creating an instance of the #viewComponentClass just to check if its #isRestful, would it make sense to: 1) Move to the class side the four occurrences of #isRestful implementation in the PRViewComponent hierarchy, and then 2) Change the code in PRViewCommand to delegate to #viewComponentClass? Regards, Reza _______________________________________________ Magritte, Pier and Related Tools ... https://www.iam.unibe.ch/mailman/listinfo/smallwiki