AppserverIo\Appserver\ServletEngine\Security\MappingInterface::getAuthenticatorSerial PHP Method

    public function getAuthenticatorSerial();

 /**
  * Returns the configured authenticator for the passed URL pattern authenticator mapping.
  *
  * @param \AppserverIo\Appserver\ServletEngine\Security\MappingInterface|null $mapping The URL pattern to authenticator mapping
  *
  * @return \AppserverIo\Storage\StorageInterface The storage with the authentication types
  * @throws \AppserverIo\Http\Authentication\AuthenticationException Is thrown if the authenticator with the passed key is not available
  */
 public function getAuthenticator(MappingInterface $mapping = null)
 {
     // query whether or not a mapping has been passed
     if ($mapping != null) {
         // query whether or not we've an authentication manager with the passed key
         if (isset($this->authenticators[$authenticatorSerial = $mapping->getAuthenticatorSerial()])) {
             return $this->authenticators[$authenticatorSerial];
         }
         // throw an exception if not
         throw new AuthenticationException(sprintf('Can\'t find authenticator serial %s', $authenticatorSerial));
     }
     // try to find the default authenticator instead
     foreach ($this->authenticators as $authenticator) {
         if ($authenticator->isDefaultAuthenticator()) {
             return $authenticator;
         }
     }
     // throw an exception if we can't find a default authenticator also
     throw new AuthenticationException('Can\'t find a default authenticator');
 }