wp-admin/includes/class-wp-users-list-table.php:355Captures the bulk action required, and return it.
string public function current_action() { if ( isset( $_REQUEST['changeit'] ) ) { return 'promote'; } return parent::current_action(); }Introduced in 3.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-wp-users-list-table.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.