Implementing setShadow() on Markers

[Jesse Fulton]

I'm trying to use custom Marker icons and am having trouble
implementing setShadow(). It doesn't exist on the
com.google.gwt.maps.client.overlay.Marker class or in the
MarkerOptions class. I tried extending Marker and implementing it
using my own custom code, but still no luck.

Here are the two classes I created:
ShadowMarkerImpl - http://pastie.org/1033597
ShadowMarker - http://pastie.org/1033598

Any idea what I'm missing?

Thanks,
-Jesse