private static @Nullable PsiClass findSpecialSuperClass(@NotNull PsiClass psiClass, @NotNull String className) {
    return JavaPsiFacade.getInstance(psiClass.getProject()).findClass(className, psiClass.getResolveScope());
  }
private static @Nullable PsiClass findSpecialSuperClass(@NotNull PsiClass psiClass, @NotNull String className)