code: def test_few_shot_lengths_correct(self):
      def helper(n_shot):
          values = self.dump_teacher_text(
              test_agents.SystemTeacher,
              test_agents.EPISODE_SETUP__MULTI_EPISODE_BS,
              {"episodes_randomization_seed": 0, "n_shot": n_shot},
          )
          self.assertEqual(len(values), n_shot)
  
      for i in self.FEW_SHOT_SAMPLES:
          helper(i)
  
imports: import unittest
  import copy
  import parlai.core.tod.tod_core
  import parlai.core.tod.tod_test_utils.test_agents
label_desc: Use image node_id 2 for calling the TestLowShot obj's underlying member method code with example usage: obj.test_few_shot_lengths_correct() without return types