try {
final ISecurityFacade securityFacade = SecurityFacadeHandler.getSecurityFacade();
LOGGER.log(Level.FINE, "Security Facade instance used: " + securityFacade);
securityFacade.setDefaultSecurityCallback(this);
rbacToken = securityFacade.authenticate();
securityFacade.setDefaultSecurityCallback(null);
if ( rbacToken == null) {
throw new LoginException(RBACLoginModule.class.getName() + " Login failed, invalid credentials !");
}