/**
* Authenticates against the supplied adapter
*
* @param Zend\Authentication\Adapter $adapter
* @return Zend\Authentication\Result
*/
public function authenticate(Adapter $adapter)
{
$result = $adapter->authenticate();
/**
* ZF-7546 - prevent multiple succesive calls from storing inconsistent results
* Ensure storage has clean state
*/
if ($this->hasIdentity()) {
$this->clearIdentity();
}
if ($result->isValid()) {
$this->getStorage()->write($result->getIdentity());
}
return $result;
}
