code: function (cb) {
  			o1._client.auth(function (err) {
  				if (err && !(err instanceof Error)) {
  					err = new Error(err.message || err);
  				}
  
  				if (!err) {
  					o1.config = {
  						storage : o1._client._serviceUrl
  					};
  				}
  				cb(err);
  			});
  		}
docs: First authenticate with Cloud Files