ContextAwareVariantInterface

class \Drupal\ctools\Plugin\DisplayVariant\BlockDisplayVariant extends \Drupal\Core\Display\VariantBase implements \Drupal\Core\Display\ContextAwareVariantInterface, \Drupal\Core\Plugin\ContainerFactoryPluginInterface, \Drupal\ctools\Plugin\BlockVariantInterface uses \Drupal\ctools\Form\AjaxFormTrait, \Drupal\ctools\Plugin\BlockVariantTrait
class \Drupal\ctools_block_display_test\Plugin\DisplayVariant\BlockDisplayVariant extends \Drupal\ctools\Plugin\DisplayVariant\BlockDisplayVariant
class \Drupal\display_variant_test\Plugin\DisplayVariant\TestDisplayVariant extends \Drupal\Core\Display\VariantBase implements \Drupal\Core\Display\PageVariantInterface, \Drupal\Core\Display\ContextAwareVariantInterface

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