code: def test_pop_ns_fail(self):
      exp = ContainerStructure[int, dict]()
      exp.set(["some", "path", "val1"], 3)
      with self.assertRaises(MetadataInconsistency):
          exp.pop(["some", "path"])
  
imports: import unittest
  import uuid
  from neptune.exceptions import MetadataInconsistency
  from neptune.internal.backends.neptune_backend_mock import NeptuneBackendMock
  from neptune.internal.container_structure import ContainerStructure
  from neptune.internal.container_type import ContainerType
  from neptune.types.value import Value
label_desc: Use image node_id 10 for calling the TestRunStructure obj's underlying member method code with example usage: obj.test_pop_ns_fail() without return types