csharp .net xml serializer

XmlSerializer.cs

        public static T? XmlDeserializer<T>(string text)
        {
            var serializer = new XmlSerializer(typeof(T));
            using var reader = new StringReader(text);

            var result = (T?)serializer.Deserialize(reader);

            return result;
        }

        public static string XmlSerializer<T>(T inst)
        {
            var serializer = new XmlSerializer(typeof(T));
            var settings = new XmlWriterSettings { OmitXmlDeclaration = true };
            var ns = new XmlSerializerNamespaces();
            ns.Add(string.Empty, string.Empty);

            using var writer = new StringWriter();
            using var xmlWriter = XmlWriter.Create(writer, settings);
            serializer.Serialize(xmlWriter, inst, ns);

            return writer.ToString();
        }