def METHOD_NAME(self):
    subpixel_x, subpixel_y = self._adaptive_grid._high_res_coordinates
    model = LightModel(light_model_list=["GAUSSIAN"])
    kwargs_light = [{"center_x": 0, "center_y": 0, "sigma": 1, "amp": 1}]
    subgrid_values = model.surface_brightness(subpixel_x, subpixel_y, kwargs_light)
    supersampled_values = self._adaptive_grid._average_subgrid(subgrid_values)
    assert len(supersampled_values) == 1