code: function(url, callback) {
          var parsedUrl = urlparse(url, true);
          var method = this._normalizeSpecMethod(this.spec, {
              base_url: parsedUrl.protocol +'//' + parsedUrl.hostname,
              headers: {},
              method: 'GET',
              path: parsedUrl.pathname + parsedUrl.search
          });
          var request = this._createRequest(method, {}, null);
          this._callRequestMiddlewares(this.middlewares.slice(0), method, request, [], callback);
      }
docs: Direct get request