code: public void marshall(DatastoreSummary datastoreSummary, ProtocolMarshaller protocolMarshaller) {
  
          if (datastoreSummary == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(datastoreSummary.getDatastoreName(), DATASTORENAME_BINDING);
              protocolMarshaller.marshall(datastoreSummary.getStatus(), STATUS_BINDING);
              protocolMarshaller.marshall(datastoreSummary.getCreationTime(), CREATIONTIME_BINDING);
              protocolMarshaller.marshall(datastoreSummary.getLastUpdateTime(), LASTUPDATETIME_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.