code: def setUp(self):
      super().setUp()
      self._logdir = self.get_temp_dir()
      self._multiplexer = event_multiplexer.EventMultiplexer()
  
      flags = argparse.Namespace(generic_data="true")
      provider = data_provider.MultiplexerDataProvider(
          self._multiplexer, self._logdir
      )
      ctx = base_plugin.TBContext(
          flags=flags,
          logdir=self._logdir,
          multiplexer=self._multiplexer,
          data_provider=provider,
      )
      self._plugin = metrics_plugin.MetricsPlugin(ctx)
  
imports: import argparse
  import collections.abc
  import os.path
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorboard import context
  from tensorboard.backend.event_processing import data_provider
  from tensorboard.backend.event_processing import plugin_event_multiplexer
  from tensorboard.data import provider
  from tensorboard.plugins import base_plugin
  from tensorboard.plugins.image import metadata
  from tensorboard.plugins.metrics import metrics_plugin
label_desc: Use image node_id 1 for calling the MetricsPluginTest obj's underlying member method code with example usage: obj.setUp() without return types