lib/collection.js
function (prop, val) {
    if (prop === 'app' || prop === 'collection') {
      utils.defineProp(this._items, prop, val);
    } else {
      this._items[prop] = val;
    }
    return this;
  }
function (prop, val) {
    if (prop === 'app' || prop === 'collection') {
      utils.defineProp(this._items, prop, val);
    } else {
      this._items[prop] = val;
    }
    return this;
  }
function ( prop , val ) { if ( prop === 'app' || prop === 'collection' ) { utils . defineProp ( this . _items , prop , val ) ; } else { this . _items [ prop ] = val ; } return this ; }
Set an item
Set an item