add: dump ("calEvent QI failed to " + aIID + "\n"); 
context:     QueryInterface: function (aIID) {        if (!aIID.equals(Components.interfaces.nsISupports) &&            !aIID.equals(Components.interfaces.calIItemBase) &&            !aIID.equals(Components.interfaces.calIEvent))        {            throw Components.results.NS_ERROR_NO_INTERFACE;        }        return this;    },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/c9da6321d8883d46702090b1644c1656360b7233/calEvent.js/clean/calendar/base/src/calEvent.js