code: function(responseObject) {
                  var location = this._getLocationHeader(responseObject);
                  return location ? location.substr(location.lastIndexOf('/') + 1) : undefined;
              }
docs: Extract a id from the location header of a requestXHR
  @memberof corbel.Services
  @param  {Promise} responseObject response from a requestXHR
  @return {String}  id from the Location