-f INT --prefetch=INT Prefetch count. (0=unlimited, 1=off, default: 1)
-A --ack Toggle ack messages (default: True)
-R --requeuenack Toggle requeue when rejected (default: True)
+ --stream_offset=OFFSET x-stream-offset consumer argument
-l INT --charlimit=INT limit number of shown body chars (default: unlimited)
-q QUEUENAME --queue=QUEUENAME Ignore Exchange and bind to existing Queue
-i --simple call callback with one arg (filename) only