By acbramley on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
11.3.x
Introduced in version: 
11.3.0
Issue links: 
https://www.drupal.org/node/3461700
Description: 

To support better extensibility of the Overview form for Taxonomy vocabularies, Drupal\taxonomy\Form\OverviewTerms now extends Drupal\Core\Entity\EntityForm

The overview route has subsequently been updated as well
From
$route->setDefault('_form', 'Drupal\taxonomy\Form\OverviewTerms')
To
$route->setDefault('_entity_form', 'taxonomy_vocabulary.overview')

This gives developers an easy way to override this form via hook_entity_type_alter

$entity_types['taxonomy_vocabulary']->setFormClass('overview', 'Drupal\my_module\MyOverviewTerms');

Impacts: 
Module developers