anchor.diff:    void populateFromMap(Map mapData) {
       super.populateFromMap(mapData);
       abstract = mapData["abstract"];
  -    List<Map> membersMaps = mapData["members"];
  -    if (membersMaps != null && membersMaps.length > 0) {
  -      members = membersMaps.map((Map memberMap) =>
  +    members = mapData["members"].map((Map memberMap) =>
           new OutlineMember.fromMap(memberMap)).toList();
  -    }
     }
   
     Map toMap() {
  
positive.code:   }
  }
  
  class OutlineMember extends OutlineEntry {
    bool static;
  
    OutlineMember();
  
negative.code:   }
  }
  
  /**
   * Defines a class variable entry in an [OutlineClass].
   */
  class OutlineClassVariable extends OutlineMember {
    static String _type = "class-variable";
  
  