code: public function createSubscriptionForm($idProductAbstract)
      {
          $dataProvider = $this->createSubscriptionFormDataProvider();
  
          $form = $this->getFormFactory()->create(
              $this->getSubscriptionFormType(),
              $dataProvider->getData($idProductAbstract),
              $dataProvider->getOptions()
          );
  
          return $form;
      }
docs: @param int $idProductAbstract
  
  @return \Symfony\Component\Form\FormInterface