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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def url_to_resource(url, request=None):
 """ Converts the given URL to a resource. :param request: Request object (required for the host name part of the URL). If this is not given, the current request is used. """

    if request is None:
        request = get_current_request()
#    cnv = request.registry.getAdapter(request, IResourceUrlConverter)
    reg = get_current_registry()
    cnv = reg.getAdapter(request, IResourceUrlConverter)
    return cnv.url_to_resource(url)