anchor.diff:    BodyAstToHirIds get idMap => parent.value.idMap;
   
     @override
  -  Option<hir.Identifier> resolveIdentifier(String name) =>
  +  List<hir.Identifier> resolveIdentifier(String name) =>
         parent.value.resolveIdentifier(name);
     @override
     Option<Tuple2<DeclarationLocalId, Option<hir.CandyType>>> resolveReturn(
  
positive.code:   ]);
    BodyAstToHirIds get idMap;
  
    Option<hir.Identifier> resolveIdentifier(String name);
    void addIdentifier(hir.LocalPropertyIdentifier identifier);
  
    Option<Tuple2<DeclarationLocalId, Option<hir.CandyType>>> resolveReturn(
  
negative.code:   }
  
    @override
    List<Identifier> resolveIdentifier(String name) {
      final result = _identifiers[name];
      if (result != null) return [result];
      return parent.value.resolveIdentifier(name);
    }
  
  