public String check(RequestDispatcher dispatcher) {
		if (argument == null || "".equals(argument)) {
			return "missing label";
		}
		return dispatcher.testRedirect(argument, additionalArguments);
//		return null;
	}
public String check ( RequestDispatcher dispatcher ) { if ( argument == null || "" . equals ( argument ) ) { return "missing label" ; } return dispatcher . testRedirect ( argument , additionalArguments ) ; }
@param dispatcher
@return