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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_url(cls, administration_id: int, resource_path: str):
 """ Builds the URL to the API endpoint specified by the given parameters. :param administration_id: The ID of the administration (may be None). :param resource_path: The path to the resource. :return: The absolute URL to the endpoint. """

        url = urljoin(cls.base_url, '%s/' % cls.version)

        if administration_id is not None:
            url = urljoin(url, '%s/' % administration_id)

        url = urljoin(url, '%s.json' % resource_path)

        return url