public static ReadonlyGroupUnitFactory <TFilter> TryGetReader <TFilter>(this IHiveManager manager, Uri providerGroupRoot)
where TFilter : class, IProviderTypeFilter
{
var group = manager.TryGetFirstGroup(providerGroupRoot);
if (group == null)
{
return(null);
}
return(new ReadonlyGroupUnitFactory <TFilter>(group.Group.Readers, group.UriMatch.Root, manager.Context, manager.FrameworkContext));
}