anchor.diff:  }
   
   /**
  - *
  + * Defines an outline containing instances of [OutlineTopLevelEntry].
    */
   class Outline {
     List<OutlineTopLevelEntry> entries = [];
   
     Outline.fromMap(Map mapData) {
  -    List<Map> serializedEntries = mapData['entries'];
  -    for (Map serializedEntry in serializedEntries) {
  -      OutlineTopLevelEntry entry = new OutlineTopLevelEntry.fromMap(serializedEntry);
  -      entries.add(entry);
  -    }
  -  }
  -}
  -
  +    entries = mapData['entries'].map((Map serializedEntry) =>
  +      new OutlineTopLevelEntry.fromMap(serializedEntry)).toList();
  +  }
  +}
  +
  +/**
  + * Defines any line-item entry in the [Outline].
  + */
   abstract class OutlineEntry {
     String name;
     int startOffset;
  
positive.code:   }
  }
  
  class OutlineTopLevelVariable extends OutlineTopLevelEntry {
    static String _type = "top-level-variable";
  
  
negative.code:   }
  }
  
  /**
   * Defines a method entry in an [OutlineClass].
   */
  class OutlineMethod extends OutlineMember {
    static String _type = "method";
  
  