code: def list(self, id, filter=None, type=None, sort=None, limit=None, page=None):
          schema = AttachmentSchema(exclude=('path'))
          resp = self.service.list(self._base(id), filter, type, sort, limit, page)
          at, l = self.service.decode(schema, resp, many=True, links=True)
          return Page(at, l)