Contact client: update method missing

[PercyDwn]

The lexoffice api supports an update method for contacts. Why is it missing from the client?

For now I copied following part from the voucher client to the contact client:

/**
* @param string $id
* @param array $data
* @return ResponseInterface
* @throws CacheException
* @throws LexOfficeApiException
*/
public function update(string $id, array $data)
{
    $api = $this->api->newRequest('PUT', $this->resource . '/' . $id);

    $api->request = $api->request->withBody($this->createStream($data));

    return $api->getResponse();
}

Works just fine, this way I can update the contacts in lexoffice.