public async Task <ActionResult> HelloNotify(string?name, CancellationToken cancellationToken = default)
        {
            try
            {
                var query = new HelloQuery(name);
                await _eventDispatcher.Publish(query, cancellationToken);

                return(this.StatusCode(StatusCodes.Status202Accepted));
            }
            catch (ArgumentNullException e)
            {
                return(this.BadRequest(e.Message));
            }
        }
        public async Task <ActionResult <HelloResponse> > Hello(string?name, CancellationToken cancellationToken = default)
        {
            HttpContext?httpContext = this.HttpContext;

            if (httpContext != null)
            {
                _logger.LogTrace("Connection id: {ConnectionId}", httpContext.Connection.Id);
            }

            try
            {
                var           query    = new HelloQuery(name);
                HelloResponse response = await _eventDispatcher.Get(query, cancellationToken);

                response.ConnectionId = httpContext?.Connection.Id;

                return(this.Ok(response));
            }
            catch (ArgumentNullException e)
            {
                return(this.BadRequest(e.Message));
            }
        }