var rval = this._sandBox.FindProxyForURL(testURI, testHost); 
try { var rval = this._sandBox.FindProxyForURL(testURI, testHost); } catch (e) { throw new XPCSafeJSObjectWrapper(e); } 
    getProxyForURI: function(testURI, testHost) {        if (!("FindProxyForURL" in this._sandBox))            return null;        // Call the original function        var rval = this._sandBox.FindProxyForURL(testURI, testHost);        return rval;    }
5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5459/a9f17774167e74f587abd3abcd5d1ceb495c97b8/nsProxyAutoConfig.js/buggy/netwerk/base/src/nsProxyAutoConfig.js