Optional parameter for storing any arguments not handled by any readOption call. If this is left to null, an error will be triggered whenever unhandled arguments exist.
If "--help" was passed, the function returns false. In all other cases either true is returned or an exception is thrown.
Checks for unrecognized command line options and display a help screen.
This function is called automatically from vibe.appmain and from vibe.core.core.runApplication to check for correct command line usage. It will print a help screen in case of unrecognized options.