class_docstr: Make sure the package is alive.
code: def _assertZooString(self, member, container, animal_name=None):
      msg = f"Missing or empty {member} in parlai.zoo.model_list"
      if animal_name:
          msg += f" [{animal_name}]"
      self.assertIn(member, container, msg=msg)
      self.assertTrue(container[member], msg=msg)
  
file_path: ParlAI/tests/test_zootasks.py
imports: import os
  import unittest
  import pytest
  import parlai.utils.testing
  from parlai.zoo.model_list import model_list
  from parlai.tasks.task_list import task_list
label_desc: Use image node_id 1 for calling the TestZooAndTasks obj's underlying member method code with example usage: obj._assertZooString(member, container, animal_name) without return types