Chris@0: toolbar.subtrees:
Chris@0:   path: '/toolbar/subtrees/{hash}'
Chris@0:   defaults:
Chris@0:     _controller: '\Drupal\toolbar\Controller\ToolbarController::subtreesAjax'
Chris@0:   requirements:
Chris@0:     _custom_access: '\Drupal\toolbar\Controller\ToolbarController::checkSubTreeAccess'