code: def get_etf_records(self, etf_name, offset, limit, _async=False):
          
          params = {}
          path = '/etf/list'
          params['etf_name'] = etf_name
          params['offset'] = offset
          params['limit'] = limit
  
          return api_key_get(params, path, _async=_async)
docs: 查询etf换入换出明细
          :param etf_name: eth基金名称
          :param offset: 开始位置,0为最新一条
          :param limit:   返回记录条数(0, 100]
          :param _async:
          :return: