JoinPluginInterface

class \Drupal\views\Plugin\views\join\CastedIntFieldJoin extends \Drupal\views\Plugin\views\join\JoinPluginBase
class \Drupal\views\Plugin\views\join\FieldOrLanguageJoin extends \Drupal\views\Plugin\views\join\JoinPluginBase
class \Drupal\views\Plugin\views\join\JoinPluginBase extends \Drupal\Core\Plugin\PluginBase implements \Drupal\views\Plugin\views\join\JoinPluginInterface
class \Drupal\views\Plugin\views\join\Standard extends \Drupal\views\Plugin\views\join\JoinPluginBase
class \Drupal\views\Plugin\views\join\Subquery extends \Drupal\views\Plugin\views\join\JoinPluginBase