code: public static String createHttpUrlString(LibertyServer server, String contextRoot, String path) {
  
          StringBuilder sb = new StringBuilder();
          sb.append("http://")
            .append(server.getHostname())
            .append(":")
            .append(server.getHttpDefaultPort())
            .append("/")
            .append(contextRoot)
            .append("/")
            .append(path);
  
          return sb.toString();
      }
docs: Construct a URL for a test case so a request can be made.
  
  @param server - The server that is under test, this is used to get the port and host name.
  @param contextRoot - The context root of the application
  @param path - Additional path information for the request.
  @return - A fully formed URL string.
  @throws Exception