internal static DirectoryIndexReader Open(Directory directory, bool closeDirectory, IndexDeletionPolicy deletionPolicy, IndexCommit commit, bool readOnly)
        {
            SegmentInfos.FindSegmentsFile finder = new AnonymousClassFindSegmentsFile(closeDirectory, deletionPolicy, directory, readOnly);

            if (commit == null)
            {
                return((DirectoryIndexReader)finder.Run());
            }
            else
            {
                if (directory != commit.GetDirectory())
                {
                    throw new System.IO.IOException("the specified commit does not match the specified Directory");
                }
                // this can and will directly throw IOException if the specified commit point has been deleted
                return((DirectoryIndexReader)finder.DoBody(commit.GetSegmentsFileName()));
            }
        }
        internal static DirectoryIndexReader Open(Directory directory, bool closeDirectory, IndexDeletionPolicy deletionPolicy, IndexCommit commit, bool readOnly)
        {
            SegmentInfos.FindSegmentsFile finder = new AnonymousClassFindSegmentsFile(closeDirectory, deletionPolicy, directory, readOnly);

            if (commit == null)
                return (DirectoryIndexReader) finder.Run();
            else
            {
                if (directory != commit.GetDirectory())
                    throw new System.IO.IOException("the specified commit does not match the specified Directory");
                // this can and will directly throw IOException if the specified commit point has been deleted
                return (DirectoryIndexReader)finder.DoBody(commit.GetSegmentsFileName());
            }
        }