/**
* Authenticate with client id
*
* @param TokenInterface $token
* @return OAuth2ClientToken
*/
protected function authenticateClientId(TokenInterface $token)
{
$client = $this->clientProvider->get($token->getClientId());
$this->checkClient($client);
$this->checkSignature($token, $client);
$retval = new OAuth2ClientToken([]);
$retval->setAuthenticated(true);
$retval->setClientId($token->getClientId());
$retval->setClient($client);
$retval->setSignature($token->getSignature());
return $retval;
}