add: if (iid.equals(Components.interfaces.nsILoadGroup)) return loadgroup;  
context:     getInterface: function(iid) {      if (iid.equals(Components.interfaces.nsIURIContentListener))        return this;      throw Components.results.NS_ERROR_NO_INTERFACE;    }
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/68937cd68fac9d1a814edf042af884731cc2484f/nsMailDefaultHandler.js/clean/mail/components/nsMailDefaultHandler.js