code: def get_sdc_by_guid(self, guid):
          
          for sdc in self.sdc:
              if sdc.guid == guid:
                  return sdc
          raise KeyError("SDC with that GUID not found")
docs: Get ScaleIO SDC object by its id
          :param name: guid of SDC
          :return: ScaleIO SDC object
          :raise KeyError: No SDC with specified id found
          :rtype: SDC object