private void showErrorMessage(@NotNull Project project, Editor editor) {
    final String message = RefactoringBundle
      .getCannotRefactorMessage(
        RefactoringBundle.message("is.not.supported.in.the.current.context", IntroduceFunctionalVariableAction.getRefactoringName()));
    showErrorMessage(project, editor, message);
  }
private void showErrorMessage(@NotNull Project project, Editor editor)