code: def test_contextmanager(self):
      container = []
  
      def contextmanager(x):
          nonlocal container
          return x, lambda: container.append(x)
  
      @argmap(contextmanager, 0, 1, 2, try_finally=True)
      def foo(x, y, z):
          return x, y, z
  
      x, y, z = foo("a", "b", "c")
  
      # context exits are called in reverse
      assert container == ["c", "b", "a"]
  
imports: import os
  import pathlib
  import random
  import tempfile
  import pytest
  import networkx
  from networkx.utils.decorators import argmap, not_implemented_for, np_random_state, open_file, py_random_state
  from networkx.utils.misc import PythonRandomInterface
label_desc: Use image node_id 3 for calling the TestArgmap obj's underlying member method code with example usage: obj.test_contextmanager() and returns: x,  function, x,  y,  z