code: def _validate_experiment_id(self, experiment_id):
      # This data provider doesn't consume the experiment ID at all, but
      # as a courtesy to callers we require that it be a valid string, to
      # help catch usage errors.
      if not isinstance(experiment_id, str):
          raise TypeError(
              "experiment_id must be %r, but got %r: %r"
              % (str, type(experiment_id), experiment_id)
          )
  
imports: import base64
  import collections
  import json
  import random
  from tensorboard import errors
  from tensorboard.compat.proto import summary_pb2
  from tensorboard.data import provider
  from tensorboard.util import tb_logging
  from tensorboard.util import tensor_util
label_desc: Use image node_id 4 for calling the MultiplexerDataProvider obj's underlying member method code with example usage: obj._validate_experiment_id(experiment_id) without return types