code: function (identifier, data) {
      var path;
      if (identifier && data) {
        path = this.constructPath(constants.DEVICE_MANIFESTS, identifier);
        return this.Core.PATCH(path, data);
      } else {
        return this.rejectRequest('Bad Request: A device manifest identifier and a data object are required.');
      }
    }
docs: Update a device manifest
  @param  {String|Integer|undefined} identifier A Robin device manifest identifier
  @param  {Object}                   data       A data object
  @return {Function}                            A Promise