@NotNull
  @Override
  public Result charTyped(char c, @NotNull Project project, @NotNull Editor editor, @NotNull PsiFile file) {
    CodeInsightSettings codeInsightSettings = CodeInsightSettings.getInstance();
    if (c == ' ' && codeInsightSettings.JAVADOC_STUB_ON_ENTER) {
      int offset = editor.getCaretModel().getOffset();
      PsiElement element = file.findElementAt(offset);
      if (element == null && offset > 1) {
        element = file.findElementAt(offset - 2);
      }
      if (element == null) return Result.CONTINUE;
      int expectedStringStart = offset - 4;        // """ or ''' plus space char
      final Document document = editor.getDocument();
      if (PythonEnterHandler.canGenerateDocstring(element, expectedStringStart, document) == DocstringState.INCOMPLETE) {
        final PyAstDocStringOwner docOwner = PsiTreeUtil.getParentOfType(element, PyAstDocStringOwner.class);
        if (docOwner != null) {
          final String quotes = document.getText(TextRange.from(expectedStringStart, 3));
          final String docString = PyDocstringGenerator.forDocStringOwner(docOwner)
            .forceNewMode()
            .withInferredParameters(true)
            .withQuotes(quotes)
            .buildDocString();
          document.insertString(offset, docString.substring(3));
          if (!StringUtil.isEmptyOrSpaces(docString.substring(3, docString.length() - 3))) {
            editor.getCaretModel().moveCaretRelatively(100, 1, false, false, false);
          }
          return Result.STOP;
        }
      }
    }
    return Result.CONTINUE;
  }
@NotNull
  @Override
  public Result charTyped(char c, @NotNull Project project, @NotNull Editor editor, @NotNull PsiFile file)