docs: def get_items_of_recurring_per_page(self, recurring_id, per_page=1000, page=1):
          """
          Get items of recurring per page
  
          :param recurring_id: the recurring id
          :param per_page: How many objects per page. Default: 1000
          :param page: Which page. Default: 1
          :return: list
          """
          return self._get_resource_per_page(
              resource=RECURRING_ITEMS,
              per_page=per_page,
              page=page,
              params={'recurring_id': recurring_id},
          )