/**
  * Sign a 'single sign on' request using the APIs 'sso_key'.
  *
  * @param   array                                    $wheres
  * @param   \Kevindierkx\Elicit\ConnectionInterface  $connection
  * @return  string
  */
 protected function signSsoRequest(array $wheres, $connection)
 {
     return $this->signRequest($wheres, $connection->getConfig('sso_key'));
 }