/**
* Sets the distance matrix request language.
*
* @param string $language The distance matrix request language.
*
* @throws \Ivory\GoogleMap\Exception\DistanceMatrixException If the language is not valid.
*/
public function setLanguage($language = null)
{
if ((!is_string($language) || strlen($language) !== 2 && strlen($language) !== 5) && $language !== null) {
throw DistanceMatrixException::invalidDistanceMatrixRequestLanguage();
}
$this->language = $language;
}
