private void validateInput(boolean methodName) {
private void validateInput() {
	private void validateInput(boolean methodName) {		RefactoringStatus merged= new RefactoringStatus();		if (fMethodNameStatus != null && (methodName || fMethodNameStatus.hasError()))			merged.merge(fMethodNameStatus);		if (fDestinationStatus != null && (!methodName || fDestinationStatus.hasError()))			merged.merge(fDestinationStatus);		setPageComplete(!merged.hasError());		int severity= merged.getSeverity();		String message= merged.getMessageMatchingSeverity(severity);		if (severity >= RefactoringStatus.INFO) {			setMessage(message, severity);		} else {			setMessage("", NONE); //$NON-NLS-1$		}	}