def METHOD_NAME(nbapp):
    """Load the nbserver"""
    nbapp.log.info("Loading the course_list nbgrader serverextension")
    webapp = nbapp.web_app
    base_url = webapp.settings['base_url']
    webapp.settings['assignment_dir'] = nbapp.root_dir
    webapp.add_handlers(".*$", [
        (ujoin(base_url, pat), handler)
        for pat, handler in default_handlers
    ])