rem: try { dnsResolveCachedIp = dns.resolve(host, false).getNextAddrAsString(); dnsResolveCachedHost = host; } catch (e) { dnsResolveCachedIp = null; dnsResolveCachedHost = null; } return dnsResolveCachedIp; 
context: function dnsResolve(host) {    if (host == dnsResolveCachedHost) {        return dnsResolveCachedIp;    }    try {        dnsResolveCachedIp = dns.resolve(host, false).getNextAddrAsString();        dnsResolveCachedHost = host;    }    catch (e) {        dnsResolveCachedIp = null;        dnsResolveCachedHost = null;    }    return dnsResolveCachedIp;}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/699ae13bee65ec285a90e890020b22af61241565/nsProxyAutoConfig.js/clean/netwerk/base/src/nsProxyAutoConfig.js