1852* Fires after a 404 is triggered.1853*1854* @since 5.5.01855*1856* @param WP_Query$query The WP_Query instance(passed by reference).1857*/1858do_action_ref_array('set_404',array($this));1859}18601861/**1862* Retrieves the value of a query variable.1863*1864* @since 1.5.0
History
Introduced in 5.5.0. Unchanged from 6.7.7 through 7.1.0.