code: def __str__(self):
      return "MultiplexerDataProvider(logdir=%r)" % self._logdir
  
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 2 for calling the MultiplexerDataProvider obj's underlying member method code with example usage: obj.__str__() and returns: unknown