private function isAllowedAction($action)
{
$controller = $this->getInstallationController();
$isActionWhiteListed = in_array($action, array('saveLanguage', 'getInstallationCss', 'getInstallationJs', 'reuseTables'));
return in_array($action, array_keys($controller->getInstallationSteps())) || $isActionWhiteListed;
}