code: def test_cli_runner_class(app):
      runner = app.test_cli_runner()
      assert isinstance(runner, FlaskCliRunner)
  
      class SubRunner(FlaskCliRunner):
          pass
  
      app.test_cli_runner_class = SubRunner
      runner = app.test_cli_runner()
      assert isinstance(runner, SubRunner)
  
imports: import importlib.metadata
  import click
  import pytest
  import flask
  from flask import appcontext_popped
  from flask.cli import ScriptInfo
  from flask.globals import _cv_request
  from flask.json import jsonify
  from flask.testing import EnvironBuilder
  from flask.testing import FlaskCliRunner
label_desc: Use image node_id 22 for calling a global function with example usage: test_cli_runner_class(app) without return types