async getMonitorList() {
        return R.convertToBeans("monitor", await R.getAll(`
            SELECT monitor.*, monitor_group.send_url, monitor_group.custom_url FROM monitor, monitor_group
            WHERE monitor.id = monitor_group.monitor_id
            AND group_id = ?
            ORDER BY monitor_group.weight
        `, [
            this.id,
        ]));
    }
Get all monitors
@returns {Promise<Bean[]>} List of monitors