wp-includes/class-wp-customize-nav-menus.php:1535Hashes (hmac) the nav menu arguments to ensure they are not tampered with when submitted in the Ajax request.
$argsarraystring public function hash_nav_menu_args( $args ) { return wp_hash( serialize( $args ) ); }Introduced in 4.3.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-customize-nav-menus.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.