ProductLoader::getPropertyEnumValue

protected function getPropertyEnumValue(int $propertyId, $propertyValue)
{
	if (!isset($this->loadedEnumPropertyValues[$propertyId]))
	{
		$this->loadedEnumPropertyValues[$propertyId] = [];
		$enums = \CIBlockPropertyEnum::GetList([], [
			'PROPERTY_ID' => $propertyId,
		]);
		while($enum = $enums->Fetch())
		{
			$this->loadedEnumPropertyValues[$propertyId][$enum['ID']] = $enum['VALUE'];
		}
	}

	return $this->loadedEnumPropertyValues[$propertyId][$propertyValue] ?? null;
}