public Task Simple()
    {
        var handler = new HandlerUsingContextLogger();
        TestableMessageHandlerContext context = new InheritedTestableMessageHandlerContext();

        return(handler.Handle(new(), context));
    }
    public async Task Simple()
    {
        var handler = new HandlerUsingContextLogger();
        var context = new TestableMessageHandlerContext();

        context.Extensions.Set(Log.Logger);
        await handler.Handle(new StartHandlerUsingContextLogger(), context);
    }