public List<OutgoingBatch> filterBatchesForChannel(Channel channel){
  List<OutgoingBatch> filtered=getBatchesForChannel(channel);
  batches.removeAll(filtered);
  return filtered;
}

public List < OutgoingBatch > filterBatchesForChannel ( Channel channel ) { List < OutgoingBatch > filtered = getBatchesForChannel ( channel ) ; batches . removeAll ( filtered ) ; return filtered ; }
removes all batches associated with the provided channel from this object .
