docs: function() {
      var ret = Backbone.Collection.prototype.set.apply(this, arguments);
  
      this.each(function(model) {
        // Assign `db` to all models in the collection
        if (this.db) {
          model.db = this.db;
        }
  
        // Assign `user` to all models in the collection
        if (this.user) {
          model.user = this.user;
        }
      }.bind(this));
  
      return ret;
    }