docs: function (filePath,cb)
  		{
  			var realPath = this.instanceOf('wnModule')?this.modulePath+filePath:filePath,
  				cmd = !cb ? 'statSync' : 'stat';
  			if (!fs.existsSync(realPath))
  				return (cb&&cb(false) == true);
  			var _cb = cb ? function (err,stat) {
  					cb&&cb(!err ? stat : false);
  				} : null,
  				stat = fs[cmd](realPath,_cb);
  			return stat;
  		}