public Task <IEnumerable <BreadCrumbItem> > GenerateBreadcrumbTrailAsync(Guid folderId, CancellationToken cancellationToken) { if (Guid.Empty == folderId) { throw new ArgumentOutOfRangeException(nameof(folderId)); } return(_folderRepository.GenerateBreadcrumbTrailAsync(folderId, cancellationToken)); }