code: def bm_load_texture_atlas(R: int):
      device = torch.device("cuda:0")
      torch.cuda.set_device(device)
      data_dir = "/data/users/nikhilar/fbsource/fbcode/vision/fair/pytorch3d/docs/"
      obj_filename = os.path.join(
          data_dir, "tutorials/data/cow_mesh/cow.obj"
      )
      torch.cuda.synchronize()
  
      def load():
          load_obj(
              obj_filename,
              load_textures=True,
              device=device,
              create_texture_atlas=True,
              texture_atlas_size=R,
          )
          torch.cuda.synchronize()
  
      return load
  
imports: import os
  import unittest
  import warnings
  from collections import Counter
  from io import StringIO
  from pathlib import Path
  from tempfile import NamedTemporaryFile, TemporaryDirectory
  import torch
  from iopath.common.file_io import PathManager
  from pytorch3d.io import IO, load_obj, load_objs_as_meshes, save_obj
  from pytorch3d.io.mtl_io import _bilinear_interpolation_grid_sample, _bilinear_interpolation_vectorized, _parse_mtl
  from pytorch3d.renderer import TexturesAtlas, TexturesUV, TexturesVertex
  from pytorch3d.structures import join_meshes_as_batch, Meshes
  from pytorch3d.utils import torus
  from .common_testing import get_pytorch3d_dir, get_tests_dir, load_rgb_image, TestCaseMixin
label_desc: Use image node_id 42 for calling the TestMeshObjIO obj's underlying member method code with example usage: obj.bm_load_texture_atlas(R) and returns: load