class_docstr: Tests basic behavior when there is some data in TensorBoard.
  
  This extends `BasicTest`, so it inherits its methods to test that
  the basic chrome is displayed. We also check that we can navigate
  around the various dashboards.
code: def testLogdirDisplays(self):
      # TensorBoard doesn't have logdir display when there is data
      pass
  
imports: import collections
  import os
  import subprocess
  import unittest
  import tempfile
  from selenium.webdriver.common import by
  from selenium.webdriver.support import expected_conditions
  from selenium.webdriver.support import wait
  from testing.web import webtest
  from tensorboard.plugins.scalar import scalars_demo
  from tensorboard.plugins.audio import audio_demo
label_desc: Use image node_id 2 for calling the DashboardsTest obj's underlying member method code with example usage: obj.testLogdirDisplays() without return types