/**
  * @return bool
  */
 public function execute()
 {
     $success = TRUE;
     $this->requiredInjects();
     $unworkedOrders = $this->orderRepository->findUnworkedOrders();
     foreach ($unworkedOrders as $order) {
         $orderingUser = $this->userRepository->findById($order->getUser());
         $this->createBill($order, $orderingUser);
         $this->setOrderToWorked($order);
         break;
     }
     return $success;
 }