public virtual async Task <HashSet <T> > GetValuesAsync()
{
if (!_cache.TryGetValue(Key, out HashSet <T> entities))
{
var values = await _graphQLService.GetValuesAsync <IEnumerable <T> >(Method, Query);
if (values == null)
{
return(null);
}
values = Sort(values);
entities = values.ToHashSet();
_cache.Set(Key, entities);
}
return(entities);
}