[news.eclipse.tools] TP4/035: How do I delete a subset of IMarkers?

[ruthdaly@xxxxxxxxxx (Ruth Daly)]

On an earlier version of eclipse, I could delete
certain IMarkers by passing in a IMarker[] of 
the markers I wanted removed.

On the 035 version of eclipse, that API is now
private (on the Workspace class). I created 
a marker extension in my plugin.xml, and I can use 
the deleteMarkers method on IResource to 
delete all IMarkers, of my marker extension 
type, from the IResource. But how do I 
delete a subset of those IMarkers from the 
IResource? 

I can't get into my reasons on this newsgroup,
but it is not feasible for me to define more
marker extensions,  and I have to delete just a
subset of the existing IMarkers.