!7

standardBot1 EAMBot {
  sync S processSimplifiedLine(S s, O... _) {
    try answer super.processSimplifiedLine(s, _);
    
    if ((s = dropMyPrefixOrNull(s)) == null) null;
    
    optPar MessageChannel channel;
    
    if "export" {
      channel.getHistory/*FromBeginning*/(/*100*/).queue(history ->
        postInChannel(channel, "Got " + nMessages(history.getRetrievedHistory())),
        onQueueError);
    }
    
    null;
  }
}