def METHOD_NAME(self):
    """for debugging"""
    if self.notify.getDebug():
        message = "%d active (%d total), %d colliders"%(
        self.activeCount, self.count, self.cTrav.getNumColliders())
        self.notify.debug(message)
        onScreenDebug.add("ShadowPlacers", message)
    return 1 # to allow assert self.debugDisplay()