anchor.diff:  
     @override
     bool get hasOverride {
  -    final metadata = this.metadata;
  -    for (var i = 0; i < metadata.length; i++) {
  -      var annotation = metadata[i];
  -      if (annotation.isOverride) {
  -        return true;
  -      }
  -    }
  -    return false;
  +    return (_getMetadataFlags() & _metadataFlag_hasOverride) != 0;
     }
   
     /// Return `true` if this element has an annotation of the form
  
positive.code:   @override
    void visitChildren(ElementVisitor visitor) {
      // There are no children to visit
    }
  }
  
  
negative.code: 
    @override
    bool get hasDeprecated {
      return (_getMetadataFlags() & _metadataFlag_hasDeprecated) != 0;
    }
  
    @override
  