Workflow or action to get the vRO version

Whats the best way to determine the vRO servers version number... I am trying to account for differences in how things are running between 6 and 7.  I found this example from burke but it is not working on version 7

var vROIP = Config.getNetworkInterfaces().getBindInterface();

var vROPort = Config.getNetworkInterfaces().getBindPort();

var getUrl = "https://"+vROIP+":"+vROPort+"/vco/api/about";

//get url

var urlObject = new URL(getUrl);

var aboutResult = urlObject.getContent() ;

// parse results

System.debug(aboutResult);

System.debug("============");

var aboutObj = JSON.parse(aboutResult);

System.debug("Version: "+aboutObj["version"]);

var version = aboutObj["version"];

System.debug("Build Number: "+aboutObj["build-number"]);

var build = aboutObj["build-number"];

System.debug("Build Date: "+aboutObj["build-date"]);

System.debug("API Version: "+aboutObj["api-version"]);

There does not seem to be a Config.getNetworkInterfaces method in 7.2