sow-and-sub-aggregated

Including the basic AMPS library:

using AMPS.Client;
using AMPS.Client.Message;
using AMPS.Client.Exceptions;

Constructing the command:

Command cmd = new Command(Message.Commands.SOWAndSubscribe)
                  .setTopic(topic)
                  .setOptions(Message.Options.Projection("/id as /id, COUNT(/values) as /valueCount") +
                              Message.Options.Grouping("/id") +
                              Message.Options.OOF )
              ;

The command can now be used in execute or executeAsync.