CSMSL.IO.OMSSA.OmssaModification.LoadOmssaModifications C# (CSharp) Метод

        public static void LoadOmssaModifications(Stream stream, bool userMod = true)
        {
            XmlDocument mods_xml = new XmlDocument();
            mods_xml.Load(stream);
            XmlNamespaceManager mods_xml_ns = new XmlNamespaceManager(mods_xml.NameTable);
            mods_xml_ns.AddNamespace("omssa", mods_xml.ChildNodes[1].Attributes["xmlns"].Value);
            foreach (XmlNode mod_node in mods_xml.SelectNodes("/omssa:MSModSpecSet/omssa:MSModSpec", mods_xml_ns))
            {
                string name = mod_node.SelectSingleNode("./omssa:MSModSpec_name", mods_xml_ns).FirstChild.Value;
                int id = int.Parse(mod_node.SelectSingleNode("./omssa:MSModSpec_mod/omssa:MSMod", mods_xml_ns).FirstChild.Value);
                double mono = double.Parse(mod_node.SelectSingleNode("./omssa:MSModSpec_monomass", mods_xml_ns).FirstChild.Value);
                double average = double.Parse(mod_node.SelectSingleNode("./omssa:MSModSpec_averagemass", mods_xml_ns).FirstChild.Value);
                ModificationSites sites = ModificationSites.None;
                foreach (
                    XmlNode node in
                        mod_node.SelectNodes("./omssa:MSModSpec_residues/omssa:MSModSpec_residues_E", mods_xml_ns))
                {
                    string aa = node.FirstChild.Value;
                    sites = sites.Set(aa[0]);
                }
                OmssaModification mod = new OmssaModification(name, id, mono, average, userMod, sites);
                Modifications.Add(name, mod);
                _modificationKeyDicitonary[id] = name;
            }
        }