return new RefactoringStatus();
if (!(fCu instanceof CompilationUnit)) return RefactoringStatus.createFatalErrorStatus("Internal Error");  initializeAST();  return checkSelection();
	public RefactoringStatus checkActivation(IProgressMonitor pm) throws JavaModelException {		try{			pm.beginTask("", 1);			/* left empty - all checking is done in checkInput			 * that way we get a preview for compile errors			*/ 			return new RefactoringStatus();		} finally {			pm.done();		}		}