rem: if (this.mImmutable) throw Components.results.NS_ERROR_FAILURE; 
add: this.modify(); 
context:     removeAttendee: function (attendee) {        if (this.mImmutable)            throw Components.results.NS_ERROR_FAILURE;        var found = false, newAttendees = [];        for (var i = 0; i < this.mAttendees.length; i++) {            if (this.mAttendees[i] != attendee)                newAttendees.push(this.mAttendees[i]);            else                found = true;        }        if (found)            this.mAttendees = newAttendees;        else            throw Component.results.NS_ERROR_INVALID_ARG;    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/1ba290d760cf7333c2b0bcaa7899cff74a8efaad/calItemBase.js/buggy/calendar/base/src/calItemBase.js