All classes that implement MigrationPluginManagerInterface in Drupal 8
- class \Drupal\migrate\Plugin\MigrationPluginManager implements MigrateBuildDependencyInterface, MigrationPluginManagerInterface
- class \Drupal\migrate_drupal\MigrationPluginManager
- class \Drupal\migrate_plus\Plugin\MigrationConfigEntityPluginManager
- class \Drupal\migrate_plus\Plugin\MigrationConfigEntityPluginManager