private boolean isDelegated(PsiMember classMember) {
    if(!(classMember instanceof PsiMethod method)) return false;
    for (PsiMethod delegatedMethod : myDelegatedMethods) {
      //methods reside in base class, so no substitutor needed
      if (MethodSignatureUtil.areSignaturesEqual(method.getSignature(PsiSubstitutor.EMPTY),
                                                 delegatedMethod.getSignature(PsiSubstitutor.EMPTY))) {
        return true;
      }
    }
    return false;
  }
private boolean isDelegated(PsiMember classMember)