@inherits FirstLevelAdvancedComponentAsyncModel

<AsyncContentSupport RenderHandler="@this">
    <LoadingContent>
        Please wait... Content is loading...
    </LoadingContent>
    <ChildContent>
        <div>First Component Start</div>
        <SecondLevelComponentAsync Parameter=@AsyncParameter />
        <div>First Component End</div>
    </ChildContent>
</AsyncContentSupport>