.net 6 multipattern file find with ignore list and minimum size

FindFiles_EnumerateFiles

  static IEnumerable<string> FindFiles(string directory, IEnumerable<string> masks, HashSet<string> ignoreMasks, EnumerationOptions options,long minimumSize = 0)
    {
        foreach (var file in masks.AsParallel().SelectMany(searchPattern => Directory.EnumerateFiles(directory, searchPattern, options)))
        {
            var fi = new FileInfo(file);
            if (fi.Length < minimumSize)
            {
                Log.Debug("Skipping {File} with size {Length:N0}",file,fi.Length);
                continue;
            }

            var ext = Path.GetExtension(file);
            if (ignoreMasks.Contains(ext))
            {
                Log.Debug("Skipping {File} since its extension ({Ext}) is in ignoreMasks",file,ext);
                continue;
            }
        
            yield return file;
        }
    }