PropertyValueCollection::getValues

public function getValues()
{
	$values = [];

	/** @var BitrixCatalogv2PropertyValuePropertyValue $item */
	foreach ($this->getIterator() as $item)
	{
		$values[] = $item->getValue();
	}

	if (!$this->isPropertyMultiple())
	{
		$values = !empty($values) ? reset($values) : null;
	}

	return $values;
}