/**
* Performs an update query, forces wt=json and decodes the response.
*
* @param Update $update
*
* @return array
*/
public function update(Update $update)
{
// Force resulting data to be json-encoded
$update->format('json');
$response = $this->updateRaw($update);
$contents = $response->getBody()->getContents();
return Json::decode($contents, true);
}
