Elcodi\Plugin\CustomShippingBundle\Form\Type\CarrierType::buildForm PHP Method

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('name', 'text', ['required' => true])->add('description', 'text', ['required' => true])->add('tax', 'entity', ['class' => $this->taxNamespace, 'required' => true, 'property' => 'name', 'multiple' => false])->add('enabled', 'checkbox', ['required' => false]);
        $builder->addEventSubscriber($this->getEntityTranslatorFormEventListener());
    }