docs: public static int findAvailablePort(int maxRetries) {
  
          int retries = 0;
          int randomPort;
          boolean portAvailable;
          do {
              randomPort = randomPort();
              portAvailable = isPortAvailable(randomPort);
              retries++;
          } while (retries <= maxRetries && !portAvailable);
          assumeTrue("no open port found", portAvailable);
          return randomPort;
      }