https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Ajax%21OpenOffCanvasDialogCommand.php/class/OpenOffCanvasDialogCommand/11.x
class OpenOffCanvasDialogCommand | Drupal API
classdrupalapi
https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Ajax%21OpenOffCanvasDialogCommand.php/9
OpenOffCanvasDialogCommand.php | Drupal API
phpdrupalapi