private static boolean isJdk5Override(PsiMethod method, PsiClass methodClass) {
        final PsiMethod[] superMethods = method.findSuperMethods();
        for (PsiMethod superMethod : superMethods) {
          final PsiClass superClass = superMethod.getContainingClass();
          if (ignoreSuperMethod(method, methodClass, superMethod, superClass)) {
            continue;
          }
          if (superClass.isInterface()) {
            continue;
          }
          if (methodClass.isInterface() &&
              superMethod.hasModifierProperty(PsiModifier.PROTECTED)) {
            // only true for J2SE java.lang.Object.clone(), but might
            // be different on other/newer java platforms
            continue;
          }
          return true;
        }
        return false;
      }
private static boolean isJdk5Override(PsiMethod method, PsiClass methodClass)