anchor.diff:                  return $package$empty;
               }
           }
  +    }
  +}
  +class serialization$PartialImpl  extends serialization$Partial {
  +    serialization$PartialImpl([$dart$core.Object _$id]) : super(_$id) {
  +        this._$id = _$id;
  +    }
  +    $dart$core.Object _$id;
  +    void instantiate() {
  +        throw new Exception();
  +    }
  +    void initialize([serialization$DeserializationContextImpl context]) {
  +        throw new Exception();
       }
   }
   abstract class serialization$ReachableReference {
  
positive.code: }
  
  Sequential meta$sequencedAnnotations([meta$model$Class annotationType, $dart$core.Object programElement]) => $package$meta$sequencedAnnotations(annotationType, programElement);
  
  $dart$core.Object $package$min([Iterable values]) {
      Iterator it = values.iterator();
  
negative.code: 
  impl$outerImpl_ get impl$outerImpl => $package$impl$outerImpl;
  
  class impl$reach_ implements dart$$Basic {
      impl$reach_() {}
      Iterator references([$dart$core.Object instance]) => $package$nothing as Iterator;
      $dart$core.Object getAnything([$dart$core.Object instance, serialization$ReachableReference ref]) => $package$nothing;
      $dart$core.Object getObject([$dart$core.Object instance, serialization$ReachableReference ref]) => $package$nothing;
      $dart$core.String toString() => "reach";
  }
  final impl$reach_ $package$impl$reach = new impl$reach_();
  
  impl$reach_ get impl$reach => $package$impl$reach;
  
  void $package$impl$$rethrow([Throwable x]) {
      throw x;
  }
  