code: def test_is_defined_native_return(env):
      t = env.from_string("{{ missing is defined }}")
      assert not t.render()
  
imports: import pytest
  from jinja2._compat import text_type
  from jinja2.exceptions import UndefinedError
  from jinja2.nativetypes import NativeEnvironment
  from jinja2.nativetypes import NativeTemplate
  from jinja2.runtime import Undefined
label_desc: Use image node_id 2 for calling a global function with example usage: test_is_defined_native_return(env) without return types