anchor.diff:    }
   
     /**
  -   * getNextCommits() is a state based function for successively retrieving
  -   * a list of commit objects in small chunks.
  +   * A state based function for successively retrieving a list of commit
  +   * objects in small chunks.
      */
     Future<List<CommitObject>> getNextCommits() {
       if (_nextHeadShas != null)
  
positive.code: class Log {
    String _branch;
    CommitGraph _graph;
    int _increment;
    List<String> _nextHeadShas;
    ObjectStore _store;
  
    /**
     * Sets up the Log object. Optional param branch specifies a branch
     * other than the current head. Optional increment specifies a number of
     * commits to return with each successive call (defaults to 1).
     */
    Log(this._store, {String branch, int increment: 1}) {
  
negative.code:   }
  
    /**
     * A static function for retrieving a list of all commit objects above a
     * branch head. Passing in an optional limit variable will return at most
     * that many commit objects.
     */
    static Future<List<CommitObject>> getAllCommits(
        ObjectStore store, String branch, {int limit}) {
  