How to use the aliyun-python-sdk-core-v3.aliyunsdkcore.auth.composer.oss_signature_composer.get_url function in aliyun-python-sdk-core-v3

def get_url(self, region_id, ak=None, secret=None):
        """
        Generate request url without domain
        :param region_id: String
        :return: String
        """
        sign_params = self.get_query_params()
        if 'RegionId' not in list(sign_params.keys()):
            sign_params['RegionId'] = region_id
        url = oss_signer.get_url(
            sign_params,
            self.get_uri_pattern(),
            self.get_path_params())
        return url