wp-includes/class-wp-customize-widgets.php:1228Refreshes the nonce for widget updates.
$noncesarrayarray public function refresh_nonces( $nonces ) { $nonces['update-widget'] = wp_create_nonce( 'update-widget' ); return $nonces; }Introduced in 4.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-customize-widgets.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.