wp-includes/rest-api/endpoints/class-wp-rest-controller.php:49Registers the routes for the objects of the controller.
public function register_routes() { _doing_it_wrong( 'WP_REST_Controller::register_routes', /* translators: %s: register_routes() */ sprintf( __( "Method '%s' must be overridden." ), __METHOD__ ), '4.7.0' ); }Introduced in 4.7.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api/endpoints/class-wp-rest-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.