lib/runner/request-helpers-presend.js
function (cb) {
                if (_.isFunction(_.get(proxies, 'resolve'))) {
                    return cb(null, proxies.resolve(url));
                }

                return cb(null, undefined);
            }
function (cb) {
                if (_.isFunction(_.get(proxies, 'resolve'))) {
                    return cb(null, proxies.resolve(url));
                }

                return cb(null, undefined);
            }
function ( cb ) { if ( _ . isFunction ( _ . get ( proxies , 'resolve' ) ) ) { return cb ( null , proxies . resolve ( url ) ) ; } return cb ( null , undefined ) ; }
try resolving custom proxies before falling-back to system proxy
try resolving custom proxies before falling - back to system proxy