code: function(service, credentials, accounts, keywords) {
    Stream.call(this, service, credentials, accounts, keywords);
    this._twit = new Twit(credentials);
    this.responder = new Responder();
    
    this._changes = [];
    this._interval = setInterval(this.intervalMethod.bind(this), QUEUE_PERIOD_DEFAULT);
  }
docs: Manages the streaming connection to Twitter
  @constructor
  @extends Stream