Example method to add to DEWindowManager

gistfile1.java

public List<IPlantWindowInterface> getIplantWindows() {
      List<IPlantWindowInterface> windows = Lists.newArrayList();
      for(Widget w : super.getWindows()){
          if(w instanceof IPlantWindowInterface){
              windows.add((IPlantWindowInterface)w);
          }
      }
      return windows;
}