code: def test_level1(self, env):
      tmpl = env.get_template("level1")
      assert tmpl.render() == (
          "|block 1 from level1|block 2 from layout|nested block 4 from layout|"
      )
  
imports: import pytest
  from jinja2 import DictLoader
  from jinja2 import Environment
  from jinja2 import TemplateRuntimeError
  from jinja2 import TemplateSyntaxError
label_desc: Use image node_id 2 for calling the TestInheritance obj's underlying member method code with example usage: obj.test_level1(env) without return types