Links
- Core: https://git.drupalcode.org/project/drupal/-/blob/11.0.x/core/lib/Drupal/...
- ECA definition of the AJAX message: https://git.drupalcode.org/project/eca/-/blob/2.1.x/modules/endpoint/src...
Tasks
1. Drupal message definition is not clear
2. Link to Drupal.message() via @see
3. Define options or provide link to options parameter.