protected boolean doMemberInfosContain(PsiMethod method) {
    for (final MemberInfo info : myMemberInfos) {
      if (info.getMember() instanceof PsiMethod) {
        if (MethodSignatureUtil.areSignaturesEqual(method, (PsiMethod)info.getMember())) return true;
      }
      else if (info.getMember() instanceof PsiClass && info.getOverrides() != null) {
        final PsiMethod methodBySignature = ((PsiClass)info.getMember()).findMethodBySignature(method, true);
        if (methodBySignature != null) {
          return true;
        }
      }
    }
    return false;
  }
protected boolean doMemberInfosContain(PsiMethod method)