code: def _check_snapshot(self, directory: str, name: str):
      self.assertTrue(
          os.path.exists(os.path.join(directory, name, "model0"))
      )
      self.assertTrue(
          os.path.exists(os.path.join(directory, name, "model1"))
      )
  
imports: import os
  import time
  from typing import Any, Sequence
  from acme import core
  from acme.jax import snapshotter
  from acme.jax import types
  from acme.testing import test_utils
  import jax.numpy
  from absl.testing import absltest
label_desc: Use image node_id 2 for calling the SnapshotterTest obj's underlying member method code with example usage: obj._check_snapshot(directory, name) without return types