public AminoAcidInternal FeatureFunction(Pair <NEC, Hla> necAndHla)
        {
            string            aminoAcidAsString  = GetAminoAcid(Pos, TreatHlaAsPrefix, necAndHla.Second);
            AminoAcidInternal aAminoAcidInternal = AminoAcidInternal.GetInstance(aminoAcidAsString);

            return(aAminoAcidInternal);
        }
        public AminoAcidInternal FeatureFunction(Pair <NEC, Hla> necAndHla)
        {
            char chAminoAcid = necAndHla.First.E[Pos - 1];
            AminoAcidInternal aAminoAcidInternal = AminoAcidInternal.GetInstance(chAminoAcid);

            return(aAminoAcidInternal);
        }