public async Task <Result> CreateAsync(Action <UserPermissionsCreateAction> action, CancellationToken cancellationToken = new CancellationToken())
        {
            cancellationToken.RequestCanceled(LogInfo);

            var impl = new UserPermissionsCreateActionImpl();

            action(impl);

            DefinedUserPermissions settings = impl.Settings.Value;

            string username = impl.Username.Value;
            string vhost    = impl.VirtualHost.Value;

            if (string.IsNullOrWhiteSpace(username))
            {
                throw new UserCredentialsMissingException("The username and/or password is missing.");
            }

            if (string.IsNullOrWhiteSpace(vhost))
            {
                throw new VirtualHostMissingException("The name of the virtual host is missing.");
            }

            string sanitizedVHost = vhost.SanitizeVirtualHostName();

            string url = $"api/permissions/{sanitizedVHost}/{username}";

            HttpResponseMessage response = await HttpPut(url, settings, cancellationToken);

            Result result = response.GetResponse();

            LogInfo($"Sent request to RabbitMQ server to create user '{username}'");

            return(result);
        }
        public async Task <Result> Create(Action <UserPermissionsCreateAction> action, CancellationToken cancellationToken = default)
        {
            cancellationToken.RequestCanceled();

            var impl = new UserPermissionsCreateActionImpl();

            action(impl);

            DefinedUserPermissions definition = impl.Definition.Value;

            Debug.Assert(definition != null);

            string username = impl.Username.Value;
            string vhost    = impl.VirtualHost.Value;

            var errors = new List <Error>();

            if (string.IsNullOrWhiteSpace(username))
            {
                errors.Add(new ErrorImpl("The username and/or password is missing."));
            }

            if (string.IsNullOrWhiteSpace(vhost))
            {
                errors.Add(new ErrorImpl("The name of the virtual host is missing."));
            }

            if (errors.Any())
            {
                return(new FaultedResult(errors));
            }

            string url = $"api/permissions/{SanitizeVirtualHostName(vhost)}/{username}";

            Result result = await Put(url, definition, cancellationToken);

            return(result);
        }