public async Task <DataProviderGetRecords <Authorization> > GetItemsAsync(int skip, int take, List <DataProviderSortInfo> sort, List <DataProviderFilterInfo> filters)
        {
            // get all defined authorizations
            DataProviderGetRecords <Authorization> list = await DataProvider.GetRecordsAsync(0, 0, null, filters);

            foreach (Authorization l in list.Data)
            {
                l.CanDelete = true;
            }
            // get all AuthorizationResource items
            using (RoleDefinitionDataProvider roleDP = new RoleDefinitionDataProvider(SiteIdentity)) {
                AuthorizationResourceDataProvider          authResDP = new AuthorizationResourceDataProvider();
                DataProviderGetRecords <ResourceAttribute> resAttrs  = authResDP.GetItems();
                // merge in AuthorizationResource items
                foreach (ResourceAttribute resAttr in resAttrs.Data)
                {
                    Authorization auth = (from l in list.Data where l.ResourceName == resAttr.Name select l).FirstOrDefault();
                    if (auth == null)
                    {
                        auth = GetFromAuthorizationResource(roleDP, resAttr);
                        list.Data.Add(auth);
                    }
                }
            }
            return(DataProviderImpl <Authorization> .GetRecords(list.Data, skip, take, sort, filters));
        }
        // API
        // API
        // API

        public async Task <Authorization> GetItemAsync(string resourceName)
        {
            Authorization data = await DataProvider.GetAsync(resourceName);

            if (data != null)
            {
                data.CanDelete = true;
                return(data);
            }
            AuthorizationResourceDataProvider authResDP = new AuthorizationResourceDataProvider();

            using (RoleDefinitionDataProvider roleDP = new RoleDefinitionDataProvider(SiteIdentity)) {
                return(GetFromAuthorizationResource(roleDP, authResDP.GetItem(resourceName)));
            }
        }