rem: this.makeBackup(); 
add: this.makeBackup(this.doWriteICS); 
context:     writeICS: function () {        this.locked = true;        if (!this.mUri)            throw Components.results.NS_ERROR_FAILURE;        // makeBackup will call doWriteICS        this.makeBackup();    },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/ec93e8e4a3aac0993bfd6a0c7499b584d34b9dc3/calICSCalendar.js/clean/calendar/providers/ics/calICSCalendar.js