TestPhpMailFailure

class \Drupal\Core\Mail\Plugin\Mail\PhpMail implements \Drupal\Core\Mail\MailInterface
- class \Drupal\Core\Mail\Plugin\Mail\TestMailCollector extends \Drupal\Core\Mail\Plugin\Mail\PhpMail implements \Drupal\Core\Mail\MailInterface
- class \Drupal\system_mail_failure_test\Plugin\Mail\TestPhpMailFailure extends \Drupal\Core\Mail\Plugin\Mail\PhpMail implements \Drupal\Core\Mail\MailInterface

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