code: def getOverlayTransformOverlayRelative(self, ulOverlayHandle):
          
  
          fn = self.function_table.getOverlayTransformOverlayRelative
          ulOverlayHandleParent = VROverlayHandle_t()
          pmatParentOverlayToOverlayTransform = HmdMatrix34_t()
          result = fn(ulOverlayHandle, byref(ulOverlayHandleParent), byref(pmatParentOverlayToOverlayTransform))
          return result, ulOverlayHandleParent, pmatParentOverlayToOverlayTransform
docs: Gets the transform if it is relative to another overlay. Returns an error if the transform is some other type.