docstr: Test Laplacian Smoothing with cot weights.
docstr_tok: ["Test","Laplacian","Smoothing","with","cot","weights","."]
code: def test_laplacian_smoothing_cot(self):
      """
      Test Laplacian Smoothing with cot weights.
      """
      meshes = TestLaplacianSmoothing.init_meshes(10, 100, 300)
  
      # feats in list
      out = mesh_laplacian_smoothing(meshes, method="cot")
      naive_out = TestLaplacianSmoothing.laplacian_smoothing_naive_cot(
          meshes, method="cot"
      )
  
      self.assertTrue(torch.allclose(out, naive_out))
  
file_path: pytorch3d/tests/test_mesh_laplacian_smoothing.py
imports: import unittest
  import torch
  from pytorch3d.loss.mesh_laplacian_smoothing import mesh_laplacian_smoothing
  from pytorch3d.structures.meshes import Meshes
label_desc: Use image node_id 5 for calling the TestLaplacianSmoothing obj's underlying member method code with example usage: obj.test_laplacian_smoothing_cot() without return types