private static function add_fewbricks_hidden_activated_check()
{
// ... but let's also check that acf-fewbricks-hidden really have been activated.
add_action('admin_init', function () {
if (!is_plugin_active('acf-fewbricks-hidden/acf-fewbricks-hidden.php')) {
add_action('admin_notices', function () {
echo self::$messages['fewbricks_hidden_missing'];
});
}
});
}