class_docstr: LRU cache.
  
  Used for storing the last used tensor.
class_docstr_tok: ["LRU","cache",".","Used","for","storing","the","last","used","tensor","."]
code: def get(self, key):
      try:
          value = self._dict.pop(key)
          self._dict[key] = value
          return value
      except KeyError:
          return None
  
imports: import collections
  import functools
  import imghdr
  import mimetypes
  import os
  import threading
  import numpy
  from werkzeug import wrappers
  from google.protobuf import json_format
  from google.protobuf import text_format
  from tensorboard import context
  from tensorboard.backend.event_processing import plugin_asset_util
  from tensorboard.backend.http_util import Respond
  from tensorboard.compat import tf
  from tensorboard.plugins import base_plugin
  from tensorboard.plugins.projector import metadata
  from tensorboard.plugins.projector.projector_config_pb2 import ProjectorConfig
  from tensorboard.util import tb_logging
label_desc: Use image node_id 2 for calling the LRUCache obj's underlying member method code with example usage: obj.get(key) and returns: value, None