anchor.diff:    }
   
     JumpTarget createJumpTarget(JumpTargetKind kind, int charOffset) {
  -    return new JumpTarget(
  -        kind, functionNestingLevel, member as MemberBuilder, charOffset);
  +    return new JumpTarget(kind, functionNestingLevel, uri, charOffset);
     }
   
     void inferAnnotations(TreeNode? parent, List<Expression>? annotations) {
  
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: }
  
  class LabelTarget implements JumpTarget {
    final JumpTarget breakTarget;
  
    final JumpTarget continueTarget;
  