code: def test_is_eigen_cpu(self):
      test_input = self.create_random_sym3x3(
          self._cpu, n=self.TEST_BATCH_SIZE
      )
  
      self._test_is_eigen(test_input)
  
imports: import unittest
  import torch
  from pytorch3d.common.workaround import symeig3x3
  from pytorch3d.transforms.rotation_conversions import random_rotations
  from .common_testing import get_random_cuda_device, TestCaseMixin
label_desc: Use image node_id 5 for calling the TestSymEig3x3 obj's underlying member method code with example usage: obj.test_is_eigen_cpu() without return types