n.
            @return The specified portion of the list.
        */
        public function subList(startIndex:int = 0, endIndex:int = 16777215):IList {
            return new List(this._collection.slice(startIndex, endIndex));
        }
        
        /**
            Finds the position of the first occurrence of a specified item.
            
            @param item: The element to search for.
            @param fromIndex: The position in the list from which to start searching for the item.
            