src/collection.js
function (evt, data) {
        // Identify the event type with the nipple's id.
        type = evt.type + ' ' + data.id + ':' + evt.type;
        self.trigger(type, data);
    }
function (evt, data) {
        // Identify the event type with the nipple's id.
        type = evt.type + ' ' + data.id + ':' + evt.type;
        self.trigger(type, data);
    }
function ( evt , data ) { // Identify the event type with the nipple's id. type = evt . type + ' ' + data . id + ':' + evt . type ; self . trigger ( type , data ) ; }
Bubble up identified events.
Bubble up identified events .