PreProcessing::isLazyloadEnable

static function isLazyloadEnable(int $siteId): bool
{
	static $result;
	if ($result !== null)
	{
		return $result;
	}

	$hooks = Site::getHooks($siteId);
	$result =
		array_key_exists('SPEED', $hooks)
		&& $hooks['SPEED']->getPageFields()['SPEED_USE_LAZY']->getValue() !== 'N';

	return $result;
}