code: def test_eq(self):
      md1 = base_plugin.FrontendMetadata(element_name="foo")
      md2 = base_plugin.FrontendMetadata(element_name="foo")
      md3 = base_plugin.FrontendMetadata(element_name="bar")
      self.assertEqual(md1, md2)
      self.assertNotEqual(md1, md3)
      self.assertNotEqual(md1, "hmm")
  
file_path: tensorboard/tensorboard/plugins/base_plugin_test.py
imports: from tensorboard import test
  from tensorboard.plugins import base_plugin
label_desc: Use image node_id 4 for calling the FrontendMetadataTest obj's underlying member method code with example usage: obj.test_eq() without return types