Properties consumerProps() {
        return consumerProps;
    }
@Test
    public void testDefaultClientId() throws IOException {
        String[] args = new String[]{
            "--bootstrap-server", "localhost:9092",
            "--topic", "test",
            "--from-beginning"
        };

        ConsoleConsumerOptions config = new ConsoleConsumerOptions(args);
        Properties consumerProperties = config.consumerProps();

        assertEquals("console-consumer", consumerProperties.getProperty(ConsumerConfig.CLIENT_ID_CONFIG));
    }