[news.eclipse.platform] Get InputStream for resource defined in extensio

[Kai Schlamp <schlamp@xxxxxx>]

Hello.

I have a custom extension point that defines the attribute "descriptor" 
which is of type "resource".
How do I now get an InputStream of that resource.
I can access the attribute itself with
String descriptor = element.getAttribute("descriptor");
What to do next to get an InputStream for this descriptor resource?

Best regards,
Kai