--- /dev/null
+entity.block.edit_form:
+ title: 'Configure block'
+ route_name: entity.block.edit_form
+ base_route: entity.block.edit_form
+
+# Per theme block layout pages.
+block.admin_display:
+ title: 'Block layout'
+ route_name: block.admin_display
+ base_route: block.admin_display
+block.admin_display_theme:
+ title: 'Block layout'
+ route_name: block.admin_display_theme
+ parent_id: block.admin_display
+ deriver: 'Drupal\block\Plugin\Derivative\ThemeLocalTask'