vendor/optional/backbone-relational-0.4.0.js
function( model ) {
			var coll = this.getCollection( model );
			coll._onModelEvent( 'change:' + model.idAttribute, model, coll );
		}
function( model ) {
			var coll = this.getCollection( model );
			coll._onModelEvent( 'change:' + model.idAttribute, model, coll );
		}
function ( model ) { var coll = this . getCollection ( model ) ; coll . _onModelEvent ( 'change:' + model . idAttribute , model , coll ) ; }
Explicitly update a model's id in it's store collection
Explicitly update a model s id in it s store collection