public ChromatogramSetData(DbChromatogramSet chromatogramSet, IEnumerable<DbChromatogram> chromatograms)
 {
     Times = ImmutableList.ValueOf(chromatogramSet.Times);
     ScanIndexes = ImmutableList.ValueOf(chromatogramSet.ScanIndexes);
     Chromatograms =
         ImmutableSortedList.FromValues(
             chromatograms.Select(
                 chromatogram =>
                 new KeyValuePair<MzKey, Chromatogram>(chromatogram.MzKey, new Chromatogram(chromatogram))));
 }