public function addSSHKey($site, $nickname, $ssh_pub_key)
{
$method = 'POST';
$resource = sprintf('/sites/%s/sshkeys', $this->getSiteName($site));
$params = array('nickname' => $nickname);
$body = array('ssh_pub_key' => $ssh_pub_key);
$result = $this->callAcapi($site, $method, $resource, $params, $body);
return $result['result'];
}