@Override
  public boolean isApplicable(@NotNull PsiElement element) {
    if (element instanceof PyParameter) {
      PyFunction function = PsiTreeUtil.getParentOfType(element, PyFunction.class);
      return function != null && function.getContainingClass() != null;
    }
    return false;
  }
@Override
  public boolean isApplicable(@NotNull PsiElement element)