public void setAuthToken(AuthToken auth) {
        authToken = auth;
    }
Sets the new Authorization Token for this session. The session is not yet considered fully
authenticated (i.e. active) since a resource has not been bound at this point. This
message will be sent after SASL authentication was successful but yet resource binding
is required.

@param auth the authentication token obtained from SASL authentication.
xmppserver/src/main/java/org/jivesoftware/openfire/session/LocalClientSession.java