public static int DescendingPrecursorScoreComparison(PeptideMatch left, PeptideMatch right)
 {
     return(-(left.CumulPrecursorScore().CompareTo(right.CumulPrecursorScore())));
 }
 public static int DescendingOptimizedScoreComparison(PeptideMatch left, PeptideMatch right)
 {
     return(-(left.ProbabilityScore().CompareTo(right.ProbabilityScore())));
 }