anchor.diff:      _element.append(_anchor);
   
       if (_INCLUDE_TYPES && returnType != null && returnType.isNotEmpty) {
  -     _typeSpan = new html.SpanElement();
  -     _typeSpan.text = returnType;
  -     _typeSpan.classes.add("returnType");
  -     _element.append(_typeSpan);
  +      _typeSpan = new html.SpanElement();
  +      _typeSpan.text = returnType;
  +      _typeSpan.classes.add("returnType");
  +      _element.append(_typeSpan);
       }
   
       _element.classes.add("outlineItem ${cssClassName}");
  
positive.code:   bool overlapsOffsetRange(OffsetRange range) => _offsetRange.overlaps(range);
  
    html.LIElement get element => _element;
  
    void setSelected(bool selected) {
      _element.classes.toggle("selected", selected);
  
negative.code:     html.Rectangle elementRect = item.element.getBoundingClientRect();
      // Perhaps the item is already in view.
      if (!rootListRect.containsRectangle(elementRect)) {
        // Use [item.anchor], not [item.element] to pull the minimal amount of
        // [item] into view. For example, [item.element] for OutlineClass
        // is the whole class, which may not even fit into the outline viewport.
        item.anchor.scrollIntoView(alignment);
      }
    }
  
  