public Map act(Redirector redirector,
    SourceResolver resolver,
    Map objectModel,
    String source,
    Parameters par) throws Exception 
{
        if (this.getLogger().isDebugEnabled() == true) {
            this.getLogger().debug("BEGIN act resolver="+resolver+
                                   ", objectModel="+objectModel+
                                   ", source="+source+
                                   ", par="+par);
        }
        final String sunLetID = par.getParameter("sunLet", null);
        SunSpot sunSpot = null;
        Map map = null;
        try {
            sunSpot = (SunSpot)this.manager.lookup( SunSpot.ROLE );
            sunSpot.configurationTest();
            if ( null != sunLetID) {
                sunSpot.checkAuthentication(redirector, sunLetID);
            }
        } finally {
            this.manager.release( sunSpot );
        }
        if (this.getLogger().isDebugEnabled() == true) {
            this.getLogger().debug("END act map={}");
        }
        return EMPTY_MAP;
}