Injecting services into form types

PaymentType.php

<?php

namespace Project\WebsiteBundle\Form\Type\Payment;

use Doctrine\ORM\EntityRepository;
use Entity\Core\Account;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\Form\AbstractType;

class PaymentType extends AbstractType {
	private $account;

	public function __construct(Account $account) {
		$this->account = $account;
	}

	public function buildForm(FormBuilderInterface $builder, array $options) {
		// stuff with account
	}

	public function setDefaultOptions(OptionsResolverInterface $resolver) {
		$resolver->setDefaults(array(
			'data_class' => 'Entity\Core\Payment',
			'cascade_validation' => true
		));
	}

	public function getName() {
		return 'payment';
	}
} 

services.yml

services:
	project.form.type.payment:
        class: Project\WebsiteBundle\Form\Type\Payment\PaymentType
        arguments: ["@=service('project.helper.user').getAccount()"]
        tags:
            - { name: form.type, alias: payment }