Lucene.Net.Index.SegmentInfos.Files C# (CSharp) Method

        public ICollection<string> Files(Directory dir, bool includeSegmentsFile)
        {
            var files = new HashSet<string>();
            if (includeSegmentsFile)
            {
                string segmentFileName = SegmentsFileName;
                if (segmentFileName != null)
                {
                    files.Add(segmentFileName);
                }
            }
            var size = Size();
            for (int i = 0; i < size; i++)
            {
                var info = Info(i);
                Debug.Assert(info.Info.Dir == dir);
                if (info.Info.Dir == dir)
                {
                    files.UnionWith(info.Files());
                }
            }

            return files;
        }

 internal void  DecRef(SegmentInfos segmentInfos)
 {
     foreach (string file in segmentInfos.Files(directory, false))
     {
         DecRef(file);
     }
 }