How to use the slugid.v4 function in slugid

}
      debug('Channel was closed unexpectedly');
      that.emit('error', new Error(
        'Channel closed unexpectedly, likely server initiated shutdown'
      ));
    });
    return channel.prefetch(that._options.prefetch);
  });

  // Find queue name and decide if this is an exclusive queue
  var exclusive = !this._options.queueName;
  // Construct queue name
  this._queueName = [
    'queue',                      // Required by pulse security model
    this._connection.namespace,   // Required by pulse security model
    this._options.queueName || 'exclusive/' + slugid.v4(),
  ].join('/');

  // Create queue
  var queueCreated = channelCreated.then(function() {
    var opts = {
      exclusive:  exclusive,
      durable:    !exclusive,
      autoDelete: exclusive,
    };
    // Set max length if provided
    if (that._options.maxLength) {
      opts.maxLength =  that._options.maxLength;
    }
    return channel.assertQueue(that._queueName, opts);
  });

let timeToDeadline = secondsTo(task.deadline);
    // If deadline is reached, we don't care to publish a message about the task
    // being pending.
    if (timeToDeadline === 0) {
      // This should not happen, but if timing is right it is possible.
      console.log('runId: %s of taskId: %s became pending after deadline, ' +
                  'skipping pending message publication to azure queue',
      runId, task.taskId);
      return;
    }

    // Put message queue
    return this._putMessage(queueNames[task.priority], {
      taskId: task.taskId,
      runId: runId,
      hintId: slugid.v4(),
    }, {
      ttl: timeToDeadline,
      visibility: 0,
    });
  }

debug("Connection error in AMQPListener: ", err.stack);
      that.emit('error', err);
    });
    return that._conn.createConfirmChannel();
  }).then(function(channel_) {
    channel = channel_;
    channel.on('error', function(err) {
      debug("Channel error in AMQPListener: ", err.stack);
      that.emit('error', err);
    });
    return channel.prefetch(that._options.prefetch);
  });

  // Find queue name and decide if this is an exclusive queue
  var exclusive = !this._options.queueName;
  this._queueName = this._options.queueName || slugid.v4();

  // Create queue
  var queueCreated = channelCreated.then(function() {
    var opts = {
      exclusive:  exclusive,
      durable:    !exclusive,
      autoDelete: exclusive,
    };
    // Set max length if provided
    if (that._options.maxLength) {
      opts.maxLength =  that._options.maxLength;
    }
    return channel.assertQueue(that._queueName, opts);
  });

  // Create bindings

Promise.from(null).then(function() {
    // Create client if requested
    if (req.body.updateOrCreate == 'create') {
      return Client.create({
        version:        '0.2.0',
        name:           req.body.name,
        clientId:       slugid.v4(),
        accessToken:    slugid.v4() + slugid.v4() + slugid.v4(),
        scopes:         JSON.parse(req.body.scopes),
        expires:        new Date(req.body.expires),
        details: {
          notes:        req.body.notes
        }
      });
    }

    // Update WorkerType if requested
    if (req.body.updateOrCreate == 'update') {
      return Client.load(req.body.clientId).then(function(client) {
        return client.modify(function() {
          this.name         = req.body.name;
          this.scopes       = JSON.parse(req.body.scopes);
          this.expires      = new Date(req.body.expires);
          this.details      = {notes: req.body.notes};

Promise.from(null).then(function() {
    // Create client if requested
    if (req.body.updateOrCreate == 'create') {
      return Client.create({
        version:        '0.2.0',
        name:           req.body.name,
        clientId:       slugid.v4(),
        accessToken:    slugid.v4() + slugid.v4() + slugid.v4(),
        scopes:         JSON.parse(req.body.scopes),
        expires:        new Date(req.body.expires),
        details: {
          notes:        req.body.notes
        }
      });
    }

    // Update WorkerType if requested
    if (req.body.updateOrCreate == 'update') {
      return Client.load(req.body.clientId).then(function(client) {
        return client.modify(function() {
          this.name         = req.body.name;
          this.scopes       = JSON.parse(req.body.scopes);
          this.expires      = new Date(req.body.expires);

userConfig[serviceName] = userConfig[serviceName] || {};
    userConfig[serviceName].taskcluster_access_token = accessToken;
  }

  const rootUrl = answer.rootUrl || userConfig.rootUrl;

  // The following are some hacks for now until we can do all of this in a
  // nicer way (presumably?)

  setDefault('worker_manager.providers', {});

  // TODO: Figure out what any of these should be set to
  setDefault('web_server.public_url', rootUrl);
  setDefault('web_server.additional_allowed_cors_origin', '');
  setDefault('web_server.ui_login_strategies', {});
  setDefault('web_server.session_secret', slugid.v4());

  //TODO: These github things can/should be questions in this setup thing
  setDefault('github.bot_username', '???');
  setDefault('github.github_private_pem', '???');
  setDefault('github.github_app_id', '???');
  setDefault('github.webhook_secret', []);

  // TODO: These can/should be generated by dev:init aws setup
  setDefault('queue.public_blob_artifact_bucket', 'fake_until_needed');
  setDefault('queue.private_blob_artifact_bucket', 'fake_until_needed');
  setDefault('queue.blob_artifact_region', 'fake_until_needed');

  // TODO: This eventually should just build these from rootUrl itself probably
  setDefault('ui.graphql_subscription_endpoint', `${rootUrl}/subscription`);
  setDefault('ui.graphql_endpoint', `${rootUrl}/graphql`);

function _newIdentifier() {
  var type = arguments.length <= 0 || arguments[0] === undefined ? 'c' : arguments[0];

  return type + '-' + slugid.v4();
}

    const timer = setInterval(() => setCode(v4()), 2 * 60 * 1000)
    return () => clearInterval(timer)

async getMessages(name, {visibilityTimeout, numberOfMessages}) {
    const {queue} = this._queue(name);
    const rv = [];
    const now = new Date();
    const visibilityTime = taskcluster.fromNow(`${visibilityTimeout} seconds`);

    for (let msg of queue) {
      if (now > msg._visibleAfter && now <= msg._expiresAfter) {
        msg._visibleAfter = visibilityTime;
        msg._popReceipt = slugid.v4();
        rv.push({
          messageText: msg.messageText,
          messageId: msg.messageId,
          popReceipt: msg._popReceipt,
        });
        if (rv.length === numberOfMessages) {
          break;
        }
      }
    }

    return rv;
  }