/// <summary>
        /// Writes delta for query sequences.
        /// </summary>
        /// <param name="delta">The Deltas.</param>
        /// <param name="sorter">Sorter instance.</param>
        /// <param name="outputStream">Output file name.</param>
        public static void WriteUnsortedDelta(IEnumerable<DeltaAlignment> delta, DeltaAlignmentSorter sorter, Stream outputStream)
        {
            using (StreamWriter writer = new StreamWriter(outputStream))
            {
                long deltaPositionInFile = 0;
                foreach (DeltaAlignment deltaAlignment in delta)
                {
                    deltaAlignment.Id = deltaPositionInFile;
                    string deltaString = Helper.GetString(deltaAlignment);
                    deltaPositionInFile += deltaString.Length;
                    writer.Write(deltaString);
                    sorter.Add(deltaAlignment.Id, deltaAlignment.FirstSequenceStart);
                }

                writer.Flush();
            }
        }
 /// <summary>
 /// Writes delta for query sequences.
 /// </summary>
 /// <param name="delta">The Deltas.</param>
 /// <param name="sorter">Sorter instance.</param>
 private static void WriteUnsortedDelta(IEnumerable<DeltaAlignment> delta, DeltaAlignmentSorter sorter)
 {
     using (var writer = new StreamWriter(UnsortedDeltaFile))
     {
         long deltaPositionInFile = 0;
         foreach (DeltaAlignment deltaAlignment in delta)
         {
             deltaAlignment.Id = deltaPositionInFile;
             string deltaString = Helper.GetString(deltaAlignment);
             deltaPositionInFile += deltaString.Length;
             writer.Write(deltaString);
             sorter.Add(deltaAlignment.Id, deltaAlignment.FirstSequenceStart);
         }
     }
 }
        /// <summary>
        /// Writes delta for query sequences.
        /// </summary>
        /// <param name="deltaAlignments">Delta alignments to write.</param>
        /// <param name="sorter"> </param>
        /// <param name="filename">File name to write.</param>
        private static void WriteDelta(IEnumerable<DeltaAlignment> deltaAlignments, DeltaAlignmentSorter sorter, string filename)
        {
            using (StreamWriter writer = new StreamWriter(filename))
            {
                long deltaPositionInFile = 0;

                foreach (DeltaAlignment deltaAlignment in deltaAlignments)
                {
                    deltaAlignment.Id = deltaPositionInFile;
                    string deltaString = Helper.GetString(deltaAlignment);
                    deltaPositionInFile += deltaString.Length;
                    writer.Write(deltaString);
                    sorter.Add(deltaAlignment.Id, deltaAlignment.FirstSequenceStart);
                }

                writer.Flush();
            }
        }