public function getBatchByIds()
{
$contacts = [$this->createContact(), $this->createContact()];
$ids = array_reduce($contacts, function ($vids, $contact) {
$vids[] = $contact->vid;
return $vids;
}, []);
$response = $this->contacts->getBatchByIds($ids);
$this->assertEquals(200, $response->getStatusCode());
}