public async Task BotShouldProcessEventWithinTimeout()
        {
            var config = new AppSettings {
                ProcessEventTimeout = TimeSpan.FromSeconds(5.0)
            };
            var welcomeService = new WelcomeService(config, _usersStore, _logger, _botMock.Object);

            const int testUserId = 123;

            await ProcessNewChatMember(welcomeService, testUserId, DateTime.UtcNow);

            Assert.Collection(_botMock.Invocations,
                              getChatMember => Assert.Equal(nameof(ITelegramBotClient.GetChatMemberAsync), getChatMember.Method.Name),
                              restrict => Assert.Equal(nameof(ITelegramBotClient.RestrictChatMemberAsync), restrict.Method.Name),
                              sendMessage => Assert.Equal(nameof(ITelegramBotClient.SendTextMessageAsync), sendMessage.Method.Name));

            Assert.Equal(testUserId, _usersStore.GetAll().Single().Id);
        }