All classes that implement SourcePluginUiInterface in Translation Management Tool 8
- class \Drupal\tmgmt\SourcePluginUiBase implements SourcePluginUiInterface
- class \Drupal\tmgmt_config\ConfigSourcePluginUi
- class \Drupal\tmgmt_content\ContentEntitySourcePluginUi
- class \Drupal\tmgmt_locale\LocaleSourcePluginUi