@Override
  public @Nullable String getQualifiedName(@NotNull PsiElement element) {
    if (element instanceof PyClass) {
      return ((PyClass)element).getQualifiedName();
    }
    if (element instanceof PyFunction) {
      return ((PyFunction)element).getQualifiedName();
    }
    return null;
  }
@Override
  public @Nullable String getQualifiedName(@NotNull PsiElement element)