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: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/9484cd5028816c4e1bd9dd2ed1d9d090116e32ad/calWcapSession.js/clean/calendar/providers/wcap/calWcapSession.js