Helper function to handle rison page
            arguments, sets defaults and impose
            FAB_API_MAX_PAGE_SIZE

        :param rison_args:
        :return: (tuple) page, page_size

def _handle_page_args(self, rison_args):
        """
            Helper function to handle rison page
            arguments, sets defaults and impose
            FAB_API_MAX_PAGE_SIZE

        :param rison_args:
        :return: (tuple) page, page_size
        """
        page = rison_args.get(API_PAGE_INDEX_RIS_KEY, 0)
        page_size = rison_args.get(API_PAGE_SIZE_RIS_KEY, self.page_size)
        return self._sanitize_page_args(page, page_size)