public string ToString(string combinedEntryDesc, bool addAllFilesEntry = true) => $"{FilesystemFilter.SerializeEntry(combinedEntryDesc, Filters.SelectMany(filter => filter.Extensions).Distinct().OrderBy(s => s))}|{ToString(addAllFilesEntry)}";
public string ToString(string combinedEntryDesc, bool addAllFilesEntry = true) { _allSer ??= FilesystemFilter.SerializeEntry(combinedEntryDesc, Filters.SelectMany(static filter => filter.Extensions).Distinct().OrderBy(static s => s).ToList());