class_docstr: Base class for end-to-end testing of TFX templates.
code: def _runCli(self, args: List[str]) -> str:
      return cli_test_utils.run_cli(args)
  
imports: import os
  import re
  from typing import List, Iterable, Tuple
  from tfx.tools.cli.e2e import test_utils
  from tfx.utils import io_utils
  from tfx.utils import test_case_utils
label_desc: Use image node_id 2 for calling the BaseEndToEndTest obj's underlying member method code with example usage: obj._runCli(args) and returns: cli_test_utils