FluidXml\FluidContext::callfn PHP Méthode

    protected function callfn($fn, $args)
    {
        if ($fn instanceof \Closure) {
            $bind = \array_shift($args);
            $fn = $fn->bindTo($bind);
            // It is faster than \call_user_func.
            return $fn(...$args);
        }
        return \call_user_func($fn, ...$args);
    }