code: def test_map_transform(self):
      for amk in [True, False]:
          t = SpatialPadd(
              ["image", "label"], 10, allow_missing_keys=amk
          )
          with allow_missing_keys_mode(t):
              # check state is True
              self.assertTrue(t.allow_missing_keys)
              # and that transform works even though key is missing
              _ = t(self.data)
          # check it has returned to original state
          self.assertEqual(t.allow_missing_keys, amk)
          if not amk:
              # should fail because amks==False and key is missing
              with self.assertRaises(KeyError):
                  _ = t(self.data)
  
file_path: MONAI/tests/test_with_allow_missing_keys.py
imports: from __future__ import annotations
  import unittest
  import numpy
  from monai.transforms import Compose, SpatialPad, SpatialPadd, allow_missing_keys_mode
label_desc: Use image node_id 2 for calling the TestWithAllowMissingKeysMode obj's underlying member method code with example usage: obj.test_map_transform() without return types