All classes that implement ContentBlockPluginInterface in Open Social 8.9
- class \Drupal\social_content_block\ContentBlockBase implements ContentBlockPluginInterface
- class \Drupal\social_content_block\Plugin\ContentBlock\TopicContentBlock
- class \Drupal\social_event_content_block\Plugin\ContentBlock\EventContentBlock
- class \Drupal\social_group_content_block\Plugin\ContentBlock\GroupContentBlock