class_docstr: Metrics Plugin for TensorBoard.
code: def frontend_metadata(self):
      return base_plugin.FrontendMetadata(
          is_ng_component=True, tab_name="Time Series"
      )
  
imports: import collections
  import imghdr
  import json
  from werkzeug import wrappers
  from tensorboard import errors
  from tensorboard import plugin_util
  from tensorboard.backend import http_util
  from tensorboard.data import provider
  from tensorboard.plugins import base_plugin
  from tensorboard.plugins.histogram import metadata
  from tensorboard.plugins.image import metadata
  from tensorboard.plugins.metrics import metadata
  from tensorboard.plugins.scalar import metadata
label_desc: Use image node_id 2 for calling the MetricsPlugin obj's underlying member method code with example usage: obj.frontend_metadata() and returns: base_plugin