code: def bm_load_complex_obj(N: int):
      meshes = torus(r=0.25, R=1.0, sides=N, rings=2 * N)
      [verts], [faces] = meshes.verts_list(), meshes.faces_list()
      return TestMeshObjIO._bm_load_obj(verts, faces, decimal_places=5)
  
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 41 for calling the TestMeshObjIO obj's underlying member method code with example usage: obj.bm_load_complex_obj(N) and returns: TestMeshObjIO