code: function(options) {
        options = options ? _.clone(options) : {};
        if (options.parse === void 0) options.parse = true;
        var collection = this;
        var success = options.success;
        options.success = function(resp, status, xhr) {
          var method = options.update ? 'update' : 'reset';
          collection[method](resp, options);
          if (success) success(collection, resp, options);
        };
        return this.sync('read', this, options);
      }
docs: Fetch the default set of models for this collection, resetting the collection when they arrive. If `add: true` is passed, appends the models to the collection instead of resetting.