Expanded class hierarchy of QueueMailLanguageNegotiator in Queue Mail 8
- class \Drupal\language\LanguageNegotiator implements LanguageNegotiatorInterface
- class \Drupal\domain_lang\Language\LanguageNegotiator
- class \Drupal\graphql\FixedLanguageNegotiator
- class \Drupal\graphql\Language\LanguageNegotiator
- class \Drupal\queue_mail_language\QueueMailLanguageNegotiator