[news.eclipse.tools] How can I split my EditorPart border in half?

["Randy Hudson" <none@xxxxxxx>]

I am trying to split my EditPart into two parts using a SplitPane or similar control.  However, I cannot find a way for my "split" to mesh together nicely with the drop-shadow border that surrounds the EditPart.  I would like my split to appear the same as all of the other splits that divide the various Views.  However, I can't figure out how to make a gap in the border around the EditorPart since I don't own it.

 

For another example of this, look at how the JDT Heirarchy view is split.  That split is also different from all of the others (Perspective splits).