/**
* Returns the nth value ofthe $list
*
* @param Literals\SassList $list - the list to get from
* @param Literals\Number $n - the value to get
* @return mixed
*/
public static function nth($list, $n)
{
Literals\Literal::assertType($n, 'Number');
if ($list instanceof Literals\SassString) {
$list = new Literals\SassList($list->toString());
}
return $list->nth($n->value);
}