message: Let Java testing gRPC server use "--port <port>" as the other servers.
diff: @@ -33,11 +33,11 @@ public final class TestingServer {
  public static void main(String[] args)
  throws InterruptedException, GeneralSecurityException, IOException {
  - if (args.length != 1) {
  - System.out.println("Usage: TestingServer <port>");
  + if ((args.length != 2) || !args[0].equals("--port")) {
  + System.out.println("Usage: TestingServer --port <port>");
  System.exit(1);
  }
  - int port = Integer.parseInt(args[0]);
  + int port = Integer.parseInt(args[1]);
  TinkConfig.register();
  