code: def test_unpacking(self, test_env_async):
      tmpl = test_env_async.from_string(
          "{% for a, b, c in [[1, 2, 3]] %}{{ a }}|{{ b }}|{{ c }}{% endfor %}"
      )
      assert tmpl.render() == "1|2|3"
  
imports: import asyncio
  import pytest
  from jinja2 import DictLoader
  from jinja2 import Environment
  from jinja2 import Template
  from jinja2.asyncsupport import auto_aiter
  from jinja2.exceptions import TemplateNotFound
  from jinja2.exceptions import TemplatesNotFound
  from jinja2.exceptions import UndefinedError
label_desc: Use image node_id 24 for calling the TestAsyncForLoop obj's underlying member method code with example usage: obj.test_unpacking(test_env_async) without return types