I've just about worked out how to use a composer to replace my old Global.asax.OnApplicationStarted code, but I'm still completely in the dark about how to replace my old code:

    protected new void Application_Error(object sender, EventArgs e)
    {
        // my code here
    }

    internal void Application_BeginRequest(object sender, EventArgs e)
    {
        // my code here
    }

    internal void Application_EndRequest(object sender, EventArgs e)
    {
        // my code here
    }

I'm sure I'm missing something very obvious, can anyone give a code snippet to run code under these events in v8?