add: host = safeToString(host);  
context: function dnsResolve(host) {    try {        return dns.resolve(host, 0).getNextAddrAsString();    } catch (e) {        return null;    }}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10234/d22f75038d5bdf16deeda0b4343788c9a0586c48/nsProxyAutoConfig.js/clean/netwerk/base/src/nsProxyAutoConfig.js