rem: this.log("login"); this.getSessionId(); 
add: this.logout(); this.getSessionId(); 
context:     login:    function()    {        this.log("login");        this.getSessionId(); // does *not* assure that ticket is valid    },
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/c4f9cdeaecfeac45209d141d619bb5c7eb3827b4/calWcapSession.js/clean/calendar/providers/wcap/calWcapSession.js