How to use queuesadilla in a Cake 3.x controller action

TasksController.php

<?php

class TasksController extends AppController {
  
  //.. code
  public function execute_it($id) {
    
    $task = $this->Tasks->get($id);
    $_worker = envDefault('WORKER_CLASS', 'Sequential');

    $WorkerClass = "josegonzalez\\Queuesadilla\\Worker\\" . $_worker . "Worker";

    $worker = new $WorkerClass($engine, $logger, ['maxIterations' => 5]);
    $worker->work();
    
  }
  
  // .. code
}