@Override
    protected void reactivateSession(String sessionIdentifier) {
        sessionManager.reactivateSession(sessionIdentifier);
    }
Session manager for generating and maintaining unique tokens to
represent the authentication flow of a user who has only partially
authenticated.

Requires static injection due to the fact that the webapp just calls the
constructor directly when creating new Listeners. The instances will not
be constructed by guice.

Note that is possible to instead inject an AuthenticationSessionManager
instance directly into the base class, but this results in different
instances of the session manager injected here and in the rest of the
extension, regardless of singleton configuration for the service.
extensions/guacamole-auth-sso/modules/guacamole-auth-sso-saml/src/main/java/org/apache/guacamole/auth/saml/SAMLAuthenticationEventListener.java