Expanded class hierarchy of LockException in Feeds 8.3
- class \Drupal\feeds\Exception\FeedsRuntimeException extends \RuntimeException
- class \Drupal\feeds\Exception\EmptyFeedException
- class \Drupal\feeds\Exception\EntityAccessException
- class \Drupal\feeds\Exception\LockException
- class \Drupal\feeds\Exception\MissingTargetException
- class \Drupal\feeds\Exception\NotModifiedException
- class \Drupal\feeds\Exception\SkipItemException
- class \Drupal\feeds\Exception\ValidationException