code: def testUnnamedPluginFails(self):
      with self.assertRaises(ValueError):
          plugin_asset.get_plugin_asset(_UnnamedPluginAsset)
  
file_path: tensorflow-upstream/tensorflow/python/summary/plugin_asset_test.py
imports: from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import googletest
  from tensorflow.python.summary import plugin_asset
label_desc: Use image node_id 2 for calling the PluginAssetTest obj's underlying member method code with example usage: obj.testUnnamedPluginFails() without return types