Expanded class hierarchy of TestAttribute in Drupal 8
- class \Drupal\Core\Template\Attribute implements \Drupal\Core\Template\ArrayAccess, \Drupal\Core\Template\IteratorAggregate, MarkupInterface
- class \Drupal\ds\DsAttribute
- class \Drupal\ds\DsAttribute
- class \Drupal\ds\DsAttribute
- class \Drupal\Tests\Core\Template\TestAttribute