private static boolean areGroovyObjectMethodsOverridden(GrReferenceExpression ref) {
    PsiType qualifierType = GrReferenceResolveUtil.getQualifierType(ref);
    if (!(qualifierType instanceof PsiClassType)) return false;

    PsiClass resolved = ((PsiClassType) qualifierType).resolve();
    if (resolved == null) return false;

    PsiClass groovyObject =
        JavaPsiFacade.getInstance(ref.getProject())
            .findClass(GroovyCommonClassNames.GROOVY_OBJECT, ref.getResolveScope());
    if (groovyObject == null) return false;

    String methodName;
    if (ref.getParent() instanceof GrCall) {
      methodName = "invokeMethod";
    } else if (PsiUtil.isLValue(ref)) {
      methodName = "setProperty";
    } else {
      methodName = "getProperty";
    }

    PsiMethod[] patternMethods = groovyObject.findMethodsByName(methodName, false);
    if (patternMethods.length != 1) return false;

    PsiMethod patternMethod = patternMethods[0];
    PsiMethod found = resolved.findMethodBySignature(patternMethod, true);
    if (found == null) return false;

    PsiClass aClass = found.getContainingClass();
    if (aClass == null) return false;
    String qname = aClass.getQualifiedName();
    if (GroovyCommonClassNames.GROOVY_OBJECT.equals(qname)) return false;
    if (GroovyCommonClassNames.GROOVY_OBJECT_SUPPORT.equals(qname)) return false;

    return true;
  }