How should we handle funcs?

[JohanLarsson]

public static void M(Func<Stream> factory)
{
    var stream = factory(); // As it is now IDISP001 warns here
}

public static void M(Func<IDisposable> factory)
{
    var stream = factory(); // Should this be handled differently?
}

[Maverik]

In my mind I'd expect to clean up the IDisposable I received from Func because the intent IMHO is to pass ownership to us of the final result and thus responsibility of cleanup.

[Bouke]

Is this behaviour changed at some point? The example provided no longer generates IDISP001 for me with version 4.0.1. I have a constructor taking a factory dependency (e.g. Func<Stream>), and I would expect IDISP001 to be raised whenever I use that factory method without a using.