public static RHExtension hasRHExtensions(ConfigImpl config,ExtensionDefintion ed) throws PageException, SAXException, IOException {
  XMLConfigAdmin admin=new XMLConfigAdmin(config,null);
  return admin._hasRHExtensions(config,ed);
}

public static RHExtension hasRHExtensions ( ConfigImpl config , ExtensionDefintion ed ) throws PageException , SAXException , IOException { XMLConfigAdmin admin = new XMLConfigAdmin ( config , null ) ; return admin . _hasRHExtensions ( config , ed ) ; }
returns the version if the extension is available
