}
    }

    @Test
    public void test_startProcess_invalidCommand() {
        String sessionId = "test_invalid";
        List<String> cmdList = Arrays.asList("nonexistent_command_12345");
        Consumer<ProcessBuilder> pbCall = pb -> {
            pb.redirectErrorStream(true);
        };

        try {
            processHelper.startProcess(sessionId, cmdList, pbCall);