docstr: Ensures gpt2 provides the same generation results regardless of batchsize.
docstr_tok: ["Ensures","gpt2","provides","the","same","generation","results","regardless","of","batchsize","."]
code: def test_batchsize(self):
      """
      Ensures gpt2 provides the same generation results regardless of batchsize.
      """
      for add_start_token in [True, False]:
          for batchsize in [1, 2, 4]:
              with self.subTest(
                  f"test_batchsize with bs={batchsize} and ast={add_start_token}"
              ):
                  self._test_batchsize(batchsize, add_start_token)
  
imports: import unittest
  from parlai.core.agents import create_agent
  import parlai.utils.testing
  import parlai.scripts.multiprocessing_train
  import parlai.scripts.build_dict
  import os
  import copy
label_desc: Use image node_id 3 for calling the TestGpt2 obj's underlying member method code with example usage: obj.test_batchsize() without return types