static const gchar*
getActionDescriptionCB(AtkAction *aAction, gint aActionIndex)
{
  AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aAction));
  if (!accWrap)
    return nullptr;

  nsAutoString description;
  nsresult rv = accWrap->GetActionDescription(aActionIndex, description);
  NS_ENSURE_SUCCESS(rv, nullptr);
  return AccessibleWrap::ReturnString(description);
}