LanguageSwitcherInterface

class \Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationContentEntity extends \Drupal\language\LanguageNegotiationMethodBase implements \Drupal\Core\PathProcessor\OutboundPathProcessorInterface, \Drupal\language\LanguageSwitcherInterface, \Drupal\Core\Plugin\ContainerFactoryPluginInterface
class \Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationSession extends \Drupal\language\LanguageNegotiationMethodBase implements \Drupal\Core\PathProcessor\OutboundPathProcessorInterface, \Drupal\language\LanguageSwitcherInterface
class \Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationUrl extends \Drupal\language\LanguageNegotiationMethodBase implements \Drupal\Core\PathProcessor\InboundPathProcessorInterface, \Drupal\Core\PathProcessor\OutboundPathProcessorInterface, \Drupal\language\LanguageSwitcherInterface

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