title: Signal exception in a PollingConsumer template after receive()
body: <p>It's possible to signal an error after <code>Exchange exchange = consumer.receive();</code> using a <code>PollingConsumer</code> template in Apache Camel? If you throw an error from a bean processor, for example, Camel prints a stacktrace in the console and stop's the routing. Is possible to do the same using PollingConsumer, probably retrying the message again? There's this <code>PollingConsumerPollStrategy</code> but it looks like that's for error handling <strong>before</strong> receive().</p>