@Override
  public void applyFix(@NotNull Project project, @NotNull PsiElement element, @NotNull ModPsiUpdater updater) {
    final PyCallable function = PsiTreeUtil.getParentOfType(element, PyCallable.class, false);
    assert function != null;
    final PyParameterList parameterList = function.getParameterList();
    final PyParameter[] parameters = parameterList.getParameters();
    final PyElementGenerator generator = PyElementGenerator.getInstance(project);
    String selfText = parameters.length != 0 ? parameters[0].getText() : PyNames.CANONICAL_SELF;
    final StringBuilder functionText = new StringBuilder("def foo(" + selfText);
    if (myHasValue) {
      String valueText = parameters.length > 1 ? parameters[1].getText() : "value";
      functionText.append(", ").append(valueText);
    }
    functionText.append("): pass");

    final PyParameterList list = generator.createFromText(LanguageLevel.forElement(element),
                                                          PyFunction.class, functionText.toString()).getParameterList();
    parameterList.replace(list);
  }
@Override
  public void applyFix(@NotNull Project project, @NotNull PsiElement element, @NotNull ModPsiUpdater updater)