How to use the rhea.filter.selector function in rhea

container.on('message', function (context) {
    if (context.message.properties && context.message.properties.id && context.message.properties.id < received) {
        // ignore duplicate message
        return;
    }
    if (expected === 0 || received < expected) {
        console.log(context.message.body);
        if (++received === expected) {
            context.receiver.detach();
            context.connection.close();
        }
    }
});

container.connect({ port: args.port, host: args.host }).open_receiver({source:{address:args.node, filter:filters.selector(args.selector)}});