@classmethod
def gen_account_req_body(cls, connected_id: str=None, account_list: list=None
    ) ->dict:
    """
        codef account관련 요청을 위한 request body 생성.

        :param connected_id: codef connected id
        :param account_list: account list
        :return: request body
        """
    body = {}
    if connected_id is None and account_list is None:
        raise AttributeError(
            'At least one of connected_id and account_list must contain a parameter.'
            )
    if connected_id is not None:
        body['connectedId'] = connected_id
    if account_list is not None:
        body['accountList'] = account_list
    return body
