lib/command/pubsub/subscribe.js
function execute(req, res) {
  this.state.pubsub.subscribe(req.conn, req.args);
}
function execute(req, res) {
  this.state.pubsub.subscribe(req.conn, req.args);
}
function execute ( req , res ) { this . state . pubsub . subscribe ( req . conn , req . args ) ; }
Respond to the SUBSCRIBE command.
Respond to the SUBSCRIBE command .