code: def get_sds_by_id(self,id):
          
          for sds in self.sds:
              if sds.id == id:
                  return sds
          raise KeyError("SDS with that ID not found")
docs: Get ScaleIO SDS object by its id
          :param name: ID of SDS
          :return: ScaleIO SDS object
          :raise KeyError: No SDS with specified id found
          :rtype: SDS object