*
* @Block(
* id = "system_branding_block",
- * admin_label = @Translation("Site branding")
+ * admin_label = @Translation("Site branding"),
+ * forms = {
+ * "settings_tray" = "Drupal\system\Form\SystemBrandingOffCanvasForm",
+ * },
* )
*/
class SystemBrandingBlock extends BlockBase implements ContainerFactoryPluginInterface {