/// <summary>
 /// Downloads sequence as fasta file from ncbi.
 /// </summary>
 /// <param name="fastaFileStream">
 /// The fasta file stream.
 /// </param>
 /// <returns>
 /// The <see cref="ISequence"/>.
 /// </returns>
 public static ISequence GetFastaSequence(Stream fastaFileStream)
 {
     var fastaParser = new FastAParser();
     var result = fastaParser.ParseOne(fastaFileStream);
     fastaFileStream.Dispose();
     return result;
 }