Base::proxyAction

protected function proxyAction($action, array $arguments = [])
{
	$controller = $this->getDocumentGeneratorController();
	$controller->setScope($this->getScope());
	/** @var Result $result */
	$result = call_user_func_array([$controller, $action], $arguments);
	$this->errorCollection->add($controller->getErrors());
	if($result === false)
	{
		$result = null;
	}

	return $result;
}