docs: function WorkqueueParser(importer) {
      Parser.call(this, importer);
  
      importer.registerEventHandler('workqueue_execute_start',
          WorkqueueParser.prototype.executeStartEvent.bind(this));
      importer.registerEventHandler('workqueue_execute_end',
          WorkqueueParser.prototype.executeEndEvent.bind(this));
      importer.registerEventHandler('workqueue_queue_work',
          WorkqueueParser.prototype.executeQueueWork.bind(this));
      importer.registerEventHandler('workqueue_activate_work',
          WorkqueueParser.prototype.executeActivateWork.bind(this));
    }