wp-includes/class-wp-admin-bar.php:90Adds a node (menu item) to the admin bar menu.
$nodearray public function add_menu( $node ) { $this->add_node( $node ); }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/class-wp-admin-bar.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.