/// <summary>
/// Filters the node set to nodes that are allowed for the user/permission combination
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="entities">The entities.</param>
/// <param name="permissionId">The permission id.</param>
/// <param name="permissionsyService">The permissionsy service.</param>
/// <param name="userId">The user id.</param>
/// <returns></returns>
public static IEnumerable <T> FilterWithPermissions <T>(this IEnumerable <T> entities, Guid permissionId, IPermissionsService permissionsyService, HiveId userId)
where T : IRelatableEntity
{
return(entities.Where(x => permissionsyService.GetEffectivePermission(permissionId, userId, x.Id).IsAllowed()));
}