wp-includes/admin-bar.php:1310Adds secondary menus.
$wp_admin_barWP_Admin_Barfunction wp_admin_bar_add_secondary_groups( $wp_admin_bar ) { $wp_admin_bar->add_group( array( 'id' => 'top-secondary', 'meta' => array( 'class' => 'ab-top-secondary', ), ) ); $wp_admin_bar->add_group( array( 'parent' => 'wp-logo', 'id' => 'wp-logo-external', 'meta' => array( 'class' => 'ab-sub-secondary', ), ) );}Introduced in 3.3.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/admin-bar.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.