Incorrect Spring Integration endpoint method

class MyEndpoints { @InboundChannelAdapter("channel") public void cannotBeVoid() {...} // A method annotated with @InboundChannelAdapter must have a return type @InboundChannelAdapter("channel") public String cannotHaveParams(String s) {..} // A method annotated with @InboundChannelAdapter can't have arguments @Filter(inputChannel = "channel", // Endpoint can have only one poller outputChannel = "channel2", poller = {@Poller(fixedDelay = "100"), @Poller(fixedRate = "100")}) public void testMultiplePollers() { } @Filter(inputChannel = "channel", outputChannel = "channel2", poller = @Poller(value = "poller", maxMessagesPerPoll = "100")) public void testValue() { } @Filter(inputChannel = "channel", outputChannel = "channel2", poller = @Poller(trigger = "trigger", cron = "0 */10 * * * *")) // 'trigger' attribute is mutually exclusive with other attributes public void testTrigger() { } }