code: def bm_save_complex_ply(N: int):
      meshes = torus(r=0.25, R=1.0, sides=N, rings=2 * N)
      [verts], [faces] = meshes.verts_list(), meshes.faces_list()
      return TestMeshPlyIO._bm_save_ply(verts, faces, decimal_places=5)
  
imports: import itertools
  import struct
  import unittest
  from io import BytesIO, StringIO
  from tempfile import NamedTemporaryFile, TemporaryFile
  import numpy
  import pytorch3d.io.ply_io
  import torch
  from iopath.common.file_io import PathManager
  from pytorch3d.io import IO
  from pytorch3d.io.ply_io import load_ply, save_ply
  from pytorch3d.renderer.mesh import TexturesVertex
  from pytorch3d.structures import Meshes, Pointclouds
  from pytorch3d.utils import torus
  from .common_testing import get_tests_dir, TestCaseMixin
label_desc: Use image node_id 27 for calling the TestMeshPlyIO obj's underlying member method code with example usage: obj.bm_save_complex_ply(N) and returns: TestMeshPlyIO