Method enqueue

src/service/task-queue.js:79–84

* Enqueues the task. If the task is already in the queue, the error is * thrown. * @param {!TaskDef} task

(task)

   * @param {!TaskDef} task
   */
  enqueue(task) {
    devAssert(!this.taskIdMap_[task.id], 'Task already enqueued: %s', task.id);
    this.tasks_.push(task);
    this.taskIdMap_[task.id] = task;
    this.lastEnqueueTime_ = Date.now();
  }

  /**
   * Dequeues the task and returns "true" if dequeueing is successful. Otherwise