code: function(done) {
    return {
      success: function(res) {
        done(null, res);
      },
      error: function(res, err) {
        done(err);
      }
    };
  }
docs: The opposite of wrapOptions, this helper wraps an errback
  and returns an options object that calls the errback appropriately.
  
  @param {Function} done
  @return {Object}