protected function callMethod(string $caller = null)
{
  $caller?: return;
  preg_match_all('#jsc:\/\/([a-z]+):([a-z]+)@(.*?)#', $caller, $m);
  !(count($m) < 3)?: return;

  [$s, $class, $method, $args] = list($m);

  return forward_static_call([$class, $method], explode(',', $args));
}