How do I undo WebRequest.RegisterPrefix

[john farrow]

I am using a third party library (SVG#) which uses WebRequest.RegisterPrefix
to register a custom handler for the "http://" prefix using the code:

WebRequest.RegisterPrefix("http://", new ExtendedHttpWebRequestCreator());

My question is how can I unregister this handler and get back to the
default one ?

thanks in advance

John