code: def setUp(self):
      super().setUp()
      self._backend = rasterization_backend.RasterizationBackends.CPU
  
file_path: graphics/tensorflow_graphics/rendering/tests/splat_test.py
imports: from absl.testing import parameterized
  import tensorflow
  from tensorflow_graphics.rendering import rasterization_backend
  from tensorflow_graphics.rendering import splat
  from tensorflow_graphics.rendering import triangle_rasterizer
  from tensorflow_graphics.rendering.tests import rasterization_test_utils
  from tensorflow_graphics.util import test_case
label_desc: Use image node_id 1 for calling the SplatTest obj's underlying member method code with example usage: obj.setUp() without return types