def METHOD_NAME(self, mode="human"):
    obs = self._obs()
    obs = cv2.resize(
        obs,
        dsize=(self._render_size, self._render_size),
        interpolation=cv2.INTER_NEAREST)
    if mode == "rgb_array":
        return obs
    else:
        cv2.imshow("BouncingSquares", obs)
        cv2.waitKey(500)