delta-subscribe-oof

Including the basic AMPS library:

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

Constructing the command:

Command cmd = new Command(Message.Command.DeltaSubscribe)
                  .setTopic(topic)
                  .setOptions(Message.Options.OOF + 
                              Message.Options.NoEmpties)
              ;

The command can now be used in execute or executeAsync.