code: function(scopes) {
                  console.log('iamInterface.group.addScopes', scopes);
                  corbel.validate.value('id', this.id);
                  return this.request({
                      url: this._buildUriWithDomain(this.uri, this.id) + '/scope',
                      method: corbel.request.method.PUT,
                      data: scopes,
                      withAuth: true
                  });
              }
docs: Add scopes to a group.
  
  @method
  @memberOf corbel.Iam.GroupBuilder
  
  @param {Array} scopes Group scopes to add.
  
  @return {Promise} A promise which resolves to undefined(void) or fails with a {@link SilkRoadError}.