anchor.diff:  }
   
   class LabelTarget implements JumpTarget {
  -  @override
  -  final MemberBuilder parent;
  -
     final JumpTarget breakTarget;
   
     final JumpTarget continueTarget;
  
positive.code: 
    final int functionNestingLevel;
  
    final MemberBuilder parent;
  
    final int charOffset;
  
    JumpTarget(
        this.kind, this.functionNestingLevel, this.parent, this.charOffset);
  
    Uri get fileUri => parent.fileUri!;
  
    bool get isBreakTarget => kind == JumpTargetKind.Break;
  
  
negative.code:   }
  
    JumpTarget createJumpTarget(JumpTargetKind kind, int charOffset) {
      return new JumpTarget(kind, functionNestingLevel, uri, charOffset);
    }
  
    void inferAnnotations(TreeNode? parent, List<Expression>? annotations) {
  