} while (--n); 
} 
  toArray: function() {    var arr = [], node = this.first;    if (node === null) { return arr; }    var n = this.length;    do {      arr.push(node.data || node);      node = node.next;    } while (--n);    return arr;  }
3123	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/3123/f993befab410a4c8d4d1b2494b215c4b6e1bf18d/linkedlist.js/clean/src/linkedlist.js