   }
        
        /**
            Removes all of the items from this list.
        */
        public function clear():void {
            this._collection.splice(0);
        }
        
        /**
            Determines if this list contains a specified element.
            
            @param item: Element to search for.
            @return Returns <code>true</code> if the list contains the element; otherwise <code>false</code>.
        */
        public function contains(item:*):Boolean {
            r