public precanceled_commands_via_cancellation_token()
        {
            _dispatcher = new Dispatcher(nameof(precanceled_commands_via_cancellation_token));
            IHandleCommand <TestTokenCancellableCmd> handler = new TokenCancellableCmdHandler();

            // ReSharper disable once RedundantTypeArgumentsOfMethod
            _dispatcher.Subscribe <TestTokenCancellableCmd>(handler);
        }
 protected override void Given()
 {
     Handler = new TokenCancellableCmdHandler();
     Bus.Subscribe(Handler);
 }