GroupStepper::getSiteDataForUpdateCopiedSite

private function getSiteDataForUpdateCopiedSite(array $siteData, array $pageMapIds): array
{
	$copiedSiteData = [];
	$codes = ['LANDING_ID_INDEX', 'LANDING_ID_404', 'LANDING_ID_503'];
	foreach ($codes as $code)
	{
		if ($siteData[$code] && isset($pageMapIds[$siteData[$code]]))
		{
			$copiedSiteData[$code] = $pageMapIds[$siteData[$code]];
		}
	}
	return $copiedSiteData;
}