private void UpdateFormDefinitionWithGlobalPermissions(IUserGroup userGroup, XElement bindingsElement, XElement placeHolderElement)
        {
            var helper = new GlobalPermissionsFormsHelper(
                    SR.GetString("Composite.Plugins.UserGroupElementProvider", "EditUserGroup.EditUserGroupStep1.GlobalPermissionsFieldLabel"),
                    SR.GetString("Composite.Plugins.UserGroupElementProvider", "EditUserGroup.EditUserGroupStep1.GlobalPermissionsMultiSelectLabel"),
                    SR.GetString("Composite.Plugins.UserGroupElementProvider", "EditUserGroup.EditUserGroupStep1.GlobalPermissionsMultiSelectHelp")
                );

            bindingsElement.Add(helper.GetBindingsMarkup());
            placeHolderElement.Add(helper.GetFormMarkup());

            EntityToken rootEntityToken = ElementFacade.GetRootsWithNoSecurity().Select(f => f.ElementHandle.EntityToken).Single();
            IEnumerable<PermissionType> permissionTypes = PermissionTypeFacade.GetLocallyDefinedUserGroupPermissionTypes(userGroup.Id, rootEntityToken).ToList();

            helper.UpdateWithNewBindings(this.Bindings, permissionTypes);
        }