Change record status: 
Project: 
Introduced in branch: 
9.1.x
Introduced in version: 
9.1.0
Description: 

A new feature has been added for Search Page plugins: They can add "use_admin_theme = TRUE" to their plugin annotation and their results will be displayed in the admin theme instead of the default theme. Sample annotation:

 * @SearchPlugin(
 *   id = "my_search_type",
 *   title = @Translation("My search type"),
 *   use_admin_theme = TRUE,
 * )

Existing plugins without the "use_admin_theme" annotation will continue to have their results displayed in the default site theme.

Impacts: 
Module developers