@Override
  public Result preprocessEnter(@NotNull PsiFile file,
                                @NotNull Editor editor,
                                @NotNull Ref<Integer> caretOffset,
                                @NotNull Ref<Integer> caretAdvance,
                                @NotNull DataContext dataContext,
                                EditorActionHandler originalHandler) {
    int offset = caretOffset.get();
    if (editor instanceof EditorWindow) {
      file = InjectedLanguageManager.getInstance(file.getProject()).getTopLevelFile(file);
      editor = InjectedLanguageUtil.getTopLevelEditor(editor);
      offset = editor.getCaretModel().getOffset();
    }
    if (!(file instanceof PyAstFile)) {
      return Result.Continue;
    }

    // honor dedent (PY-3009)
    if (BackspaceHandler.isWhitespaceBeforeCaret(editor)) {
      return Result.DefaultSkipIndent;
    }
    return Result.Continue;
  }
@Override
  public Result preprocessEnter(@NotNull PsiFile file,
                                @NotNull Editor editor,
                                @NotNull Ref<Integer> caretOffset,
                                @NotNull Ref<Integer> caretAdvance,
                                @NotNull DataContext dataContext,
                                EditorActionHandler originalHandler)