code: def testList(self):
      templates = template_handler.list_template()
      self.assertNotEqual(templates, [])
      self.assertIn("taxi", templates)
  
file_path: tfx/tfx/tools/cli/handler/template_handler_test.py
imports: import os
  import tensorflow
  from tfx.tools.cli import labels
  from tfx.tools.cli.handler import template_handler
label_desc: Use image node_id 1 for calling the TemplateHandlerTest obj's underlying member method code with example usage: obj.testList() without return types