How to use the investpy.get_certificate_historical_data function in investpy

'order': 'descending',
        },
        {
            'as_json': False,
            'order': 'descending',
        },
    ]

    for param in params:
        investpy.get_certificate_recent_data(certificate='COMMERZBANK SG 31Dec99',
                                             country='france',
                                             as_json=param['as_json'],
                                             order=param['order'],
                                             interval='Daily')

        investpy.get_certificate_historical_data(certificate='COMMERZBANK SG 31Dec99',
                                                 country='france',
                                                 from_date='01/01/1990',
                                                 to_date='01/01/2019',
                                                 as_json=param['as_json'],
                                                 order=param['order'],
                                                 interval='Daily')

    params = [
        {
            'certificate': 'COMMERZBANK SG 31Dec99',
            'country': 'france',
            'as_json': False
        },
        {
            'certificate': 'COMMERZBANK SG 31Dec99',
            'country': 'france',

'interval': 'Daily'
        },
        {
            'certificate': 'error',
            'country': 'france',
            'from_date': '01/01/2018',
            'to_date': '01/01/2019',
            'as_json': False,
            'order': 'ascending',
            'interval': 'Daily'
        }
    ]

    for param in params:
        try:
            investpy.get_certificate_historical_data(certificate=param['certificate'],
                                                     country=param['country'],
                                                     from_date=param['from_date'],
                                                     to_date=param['to_date'],
                                                     as_json=param['as_json'],
                                                     order=param['order'],
                                                     interval=param['interval'])
        except:
            pass

    params = [
        {
            'certificate': None,
            'country': 'france',
            'as_json': False
        },
        {