public async Task <Unit> Handle(MediatRCommandEnvelope <Tcommand> request, CancellationToken cancellationToken)
        {
            await OurHandler.Handle(request.Acommand);

            return(new Unit());
        }
        public async Task <Unit> Handle(MediatRCommandEnvelope <Tcommand> request, CancellationToken cancellationToken, RequestHandlerDelegate <Unit> next)
        {
            await OurPipeLine.Handle(request.Acommand, cancellationToken, () => next());

            return(Unit.Value);
        }