C#: XML-cериализация объекта в строку

public static class XmlSerialization
{
	public static string Serialize<T>(this T value)
	{
		var xmlSerializer = new XmlSerializer(typeof(T));
		using (var textWriter = new StringWriter())
		{
			xmlSerializer.Serialize(textWriter, value);
			return textWriter.ToString();    
		}            
	}

	public static T Deserialize<T>(this string xml) 
	{
		if (string.IsNullOrEmpty(xml))
		{
			return default(T);
		}
		using (var sr = new StringReader(xml))
		{
			var xmlSerializer = new XmlSerializer(typeof(T));
			using (var reader = XmlReader.Create(sr))
			{
				return (T)xmlSerializer.Deserialize(reader);
			}
		}
	}
}