code: def test_tags_empty(self):
      response = self._plugin._tags_impl(
          context.RequestContext(), "eid"
      )
  
      expected_tags = {
          "runTagInfo": {},
          "tagDescriptions": {},
      }
      self.assertEqual(expected_tags, response["scalars"])
      self.assertEqual(expected_tags, response["histograms"])
      self.assertEqual(
          {
              "tagDescriptions": {},
              "tagRunSampledInfo": {},
          },
          response["images"],
      )
  
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 10 for calling the MetricsPluginTest obj's underlying member method code with example usage: obj.test_tags_empty() without return types