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

def get_signed_header(self, region_id, ak, secret, ):
        """
        Compose signed headers.
        :param region_id: String
        :param ak: String
        :param secret: String
        :return:
        """
        sign_params = self.get_query_params()
        if 'RegionId' not in list(sign_params.keys()):
            sign_params['RegionId'] = region_id
        signed_headers = oss_signer.get_signature_headers(
            sign_params,
            ak,
            secret,
            self.get_accept_format(),
            self.get_headers(),
            self.get_uri_pattern(),
            self.get_path_params(),
            self.get_method(),
            self.__bucket)
        return signed_headers