[[[Note**: In this example, the order of the transforms in props.conf matters. The null queue transform must come first; if it comes later, it will invalidate the previous transform and route all events to the null queue.
You can trash the events that match a "drop me" pattern. In this case, simply send the matching events to the nullQueue.
You can send everything to nullQueue first and then pull back the events that match a "keep me" pattern to the indexQueue.