code: def test_pixel_generator(self):
      SRNPixelGenerator()
  
file_path: pytorch3d/tests/implicitron/test_srn.py
imports: import unittest
  import torch
  from pytorch3d.implicitron.models.generic_model import GenericModel
  from pytorch3d.implicitron.models.implicit_function.scene_representation_networks import SRNHyperNetImplicitFunction, SRNImplicitFunction, SRNPixelGenerator
  from pytorch3d.implicitron.models.renderer.ray_sampler import ImplicitronRayBundle
  from pytorch3d.implicitron.tools.config import get_default_args
  from pytorch3d.renderer import PerspectiveCameras
  from tests.common_testing import TestCaseMixin
label_desc: Use image node_id 2 for calling the TestSRN obj's underlying member method code with example usage: obj.test_pixel_generator() without return types