Extension method to generate the Xml-string version of an HbmMapping

I think it will be a good idea to add an extension method (or a method) in HbmMapping to generate the XmlVersion of the mappings;

Otherwise i have write this code lot of times.. for testing-debugging purposes:
public static class HbmMappingsExtensions
{
public static string ToXmlString(this HbmMapping mappings)
{
using (var ms = new MemoryStream())
{
var serializer = new XmlSerializer(typeof(HbmMapping));
serializer.Serialize(ms, mappings);

ms.Position = 0;
using (var streamReader = new StreamReader(ms))
{
return streamReader.ReadToEnd();
}
}
}
}