protected void AppendLookupSignatureMangledName(NameMangler nameMangler, Utf8StringBuilder sb)
 {
     if (_id != ReadyToRunHelperId.DelegateCtor)
     {
         _lookupSignature.AppendMangledName(nameMangler, sb);
     }
     else
     {
         ((DelegateCreationInfo)_target).AppendMangledName(nameMangler, sb);
     }
 }