Copyright (c) 2003, 2006 IBM Corporation and others.
All rights reserved. This program and the accompanying materials
are made available under the terms of the Eclipse Public License v1.0
which accompanies this distribution, and is available at
IBM Corporation - initial API and implementation
The NullURLStreamService is created when a registered URLStreamHandler service
with an associated URLStreamHandlerProxy becomes unregistered. The associated
URLStreamHandlerProxy must still handle all future requests for the now unregistered
scheme (the JVM caches URLStreamHandlers making up impossible to "unregister" them).
When requests come in for an unregistered URLStreamHandlerService, the
NullURLStreamHandlerService is used in it's place.