private void MessageGenerator_OnStopCalled(object sender, EventArgs e)
        {
            IsGeneratingMessages = false;

            var message = new TestMessage()
            {
                Content = "Stop Message",
                Subject = "Messages have been stopped"
            };

            OnMessageGenerated?.Invoke(this, new MessageGeneratedEventArgs(message));
        }
        private async Task Generate()
        {
            while (!Token.IsCancellationRequested)
            {
                var message = new TestMessage()
                {
                    Content = "Test message generated",
                    Subject = "Test Message"
                };

                OnMessageGenerated?.Invoke(this, new MessageGeneratedEventArgs(message));

                await Task.Delay(2000);
            }
        }