class_docstr: Read-through / write-through cache for MLMD executions.
docstr: Clears underlying cache; MLMD is untouched.
docstr_tok: ["Clears","underlying","cache",";","MLMD","is","untouched","."]
code: def clear_cache(self):
      """Clears underlying cache; MLMD is untouched."""
      with self._lock:
          self._cache.clear()
  
imports: import collections
  import contextlib
  import copy
  import threading
  import typing
  from typing import Callable, Iterator, MutableMapping, Optional
  import cachetools
  from tfx.orchestration import metadata
  from google.protobuf.internal import containers
  from ml_metadata.proto import metadata_store_pb2
label_desc: Use image node_id 5 for calling the _ExecutionCache obj's underlying member method code with example usage: obj.clear_cache() without return types