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9 changes: 5 additions & 4 deletions service_container/injection_types.rst
Original file line number Diff line number Diff line change
Expand Up @@ -116,15 +116,16 @@ by cloning the original service, this approach allows you to make a service immu

// ...
use Symfony\Component\Mailer\MailerInterface;
use Symfony\Contracts\Service\Attribute\Required;

class NewsletterManager
{
private $mailer;

/**
* @required
* @return static
*/
#[Required]
public function withMailer(MailerInterface $mailer): self
{
$new = clone $this;
Expand Down Expand Up @@ -220,14 +221,14 @@ that accepts the dependency::
// src/Mail/NewsletterManager.php
namespace App\Mail;

use Symfony\Contracts\Service\Attribute\Required;

// ...
class NewsletterManager
{
private $mailer;

/**
* @required
*/
#[Required]
public function setMailer(MailerInterface $mailer): void
{
$this->mailer = $mailer;
Expand Down