protected function define_enrol_plugin_structure() {

        $paths = array();
        $paths[] = new restore_path_element('enrol_lti_tool', $this->connectionpoint->get_path() . '/tool');
        $paths[] = new restore_path_element('enrol_lti_users', $this->connectionpoint->get_path() . '/tool/users/user');

        return $paths;
    }