docstr: Returns second kernel class
docstr_tok: ["Returns","second","kernel","class"]
code: def k2(self):
      """Returns second kernel class"""
      pass
  
imports: from abc import abstractmethod
  from unittest.mock import patch
  import torch
  import gpytorch
  from .base_test_case import BaseTestCase
label_desc: Use image node_id 2 for calling the BaseKeOpsTestCase obj's underlying member method code with example usage: obj.k2() without return types