gistfile1.txt

<?php

namespace GaylordP\FormFontAwesomeBundle\Form;

use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\Extension\Core\Type\FormType;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormView;
use Symfony\Component\OptionsResolver\OptionsResolver;

class FormTypeExtension extends AbstractTypeExtension
{
    public function getExtendedType(): string
    {
        return FormType::class;
    }

    public function configureOptions(OptionsResolver $resolver): void
    {
        dump('A');
        $resolver->setDefined([
            'ico',
        ]);
    }

    public function buildView(FormView $view, FormInterface $form, array $options): void
    {
        dump('B');
        $view->vars['ico'] = $options['ico'];
    }
}