Page::addAction

public function addAction(array $fields)
{
	$page = null;
	if(isset($fields['landingId']))
	{
		$fields['landingId'] = intval($fields['landingId']);
	}
	if($fields['landingId'] > 0)
	{
		$page = PageTable::getList(['filter' => ['=LANDING_ID' => $fields['landingId']]])->fetchObject();
	}
	if(!$page)
	{
		$page = new BitrixSalesCenterModelPage();
	}
	return $this->updateAction($page, $fields);
}