class_docstr: Test of T5 model.
class_docstr_tok: ["Test","of","T5","model","."]
code: def tearDown(self):
      del self.agent
      if torch.cuda.is_available():
          torch.cuda.empty_cache()
  
imports: import os
  import torch
  import unittest
  from parlai.core.agents import create_agent
  from parlai.core.params import ParlaiParser
  from parlai.core.torch_agent import Batch
  import parlai.utils.testing
  from parlai.utils.torch import padded_tensor
  from parlai.utils.testing import tempdir
  from tests.test_distributed import _AbstractTest
label_desc: Use image node_id 2 for calling the TestT5Model obj's underlying member method code with example usage: obj.tearDown() without return types