code: function (value) {
          checkDisposed(this);
          if (!this.isStopped) {
            for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
              os[i].onNext(value);
            }
          }
        }
docs: Notifies all subscribed observers about the arrival of the specified element in the sequence.
  @param {Mixed} value The value to send to all observers.