_onQueueTask(task, callback) {
    const fullCallback = () => {
      if (task.data.callback) {
        task.data.callback();
      }
      callback();
    };
    if (
      this._state.finalizing ||
      this._state.finalized ||
      this._state.aborted
    ) {
      fullCallback();
      return;
    }
    this._task = task;
    this._moduleAppend(task.source, task.data, fullCallback);
  }
Appends each queue task to the module.

@private
@param  {Object} task
@param  {Function} callback
@return void