code: def test_reply(self, kwargs):
      response = genai.chat(**kwargs)
      first_messages = response.messages
  
      self.assertEqual("a", response.last)
      self.assertEqual(
          [
              {"author": "1", "content": "a"},
              {"author": "1", "content": "b"},
              {"author": "1", "content": "c"},
          ],
          response.candidates,
      )
  
      response = response.reply("again")
  
imports: import copy
  import unittest.mock
  import google.ai.generativelanguage
  from google.generativeai import discuss
  from google.generativeai import client
  import google.generativeai
  from google.generativeai.types import safety_types
  from absl.testing import absltest
  from absl.testing import parameterized
label_desc: Use image node_id 11 for calling the UnitTests obj's underlying member method code with example usage: obj.test_reply(kwargs) without return types