add: feedHandlerInfo.handledOnlyByPlugin = false; 
context:   _loadFeedHandler: function() {    this._handledTypes[TYPE_MAYBE_FEED] = feedHandlerInfo;  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/dce9dc26933b94cc0e2fe656885a13d1d1e51ab1/applications.js/clean/browser/components/preferences/applications.js