class_docstr: Base Handler for CLI.
  
  Attributes:
    flags_dict: A dictionary with flags provided in a command.
code: def _get_pipeline_args_path(self, pipeline_name):
      return os.path.join(
          self._get_pipeline_info_path(pipeline_name),
          "pipeline_args.json",
      )
  
imports: import abc
  from importlib import machinery
  from importlib import util
  import json
  import os
  import subprocess
  import sys
  from typing import Any, Collection, Dict, List, Optional
  import click
  from tfx.dsl.components.base import base_driver
  from tfx.dsl.io import fileio
  from tfx.tools.cli import labels
  from tfx.tools.cli.handler import dag_runner_patcher
  from tfx.utils import io_utils
label_desc: Use image node_id 20 for calling the BaseHandler obj's underlying member method code with example usage: obj._get_pipeline_args_path(pipeline_name) and returns: os