human
Here's a good function header given the following:
I wrote the below code

    def create_app(info):
        return Flask('flaskgroup')
    @click.group(cls=FlaskGroup, create_app=create_app)
    def cli(**params):
        pass
    @cli.command()
    def test():
        click.echo(current_app.name)
    result = runner.invoke(cli, ['test'])
    assert (result.exit_code == 0)
    assert (result.output == 'flaskgroup\n')

What's a good function header?
assistant
#Here's a good function header.

def test_flaskgroup(runner):