code: def test_get_set(self):
      # Test getitem returns an accessor which can be used to modify
      # attributes at a particular index
      example = TensorPropertiesTestClass(
          x=10.0, y=(100.0, 200.0, 300.0)
      )
  
      # update y1
      example[1].y = 5.0
      self.assertTrue(example.y[1] == 5.0)
  
      # Get item and get value
      ex0 = example[0]
      self.assertTrue(ex0.y == 100.0)
  
imports: import unittest
  import numpy
  import torch
  from pytorch3d.common.compat import meshgrid_ij
  from pytorch3d.ops import eyes
  from pytorch3d.renderer import AlphaCompositor, PerspectiveCameras, PointsRasterizationSettings, PointsRasterizer, PointsRenderer
  from pytorch3d.renderer.utils import ndc_grid_sample, ndc_to_grid_sample_coords, TensorProperties
  from pytorch3d.structures import Pointclouds
  from .common_testing import TestCaseMixin
label_desc: Use image node_id 4 for calling the TestTensorProperties obj's underlying member method code with example usage: obj.test_get_set() without return types