public Task <IEnumerable <DirectoryEntry> > GetDirectoryEntries(DirectoryInfoEx directory, CancellationToken token)
{
var entries = directory.EnumerateDirectories("*", SearchOption.TopDirectoryOnly,
() => token.IsCancellationRequested);
return(TaskCombinators.ThrottledAsync(entries, (entry, _) => Task.Run(() =>
{
using (entry)
return GetDirectoryEntry(entry, directory);
}), token));
}