code: public void marshall(AppSummary appSummary, ProtocolMarshaller protocolMarshaller) {
  
          if (appSummary == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(appSummary.getAppId(), APPID_BINDING);
              protocolMarshaller.marshall(appSummary.getName(), NAME_BINDING);
              protocolMarshaller.marshall(appSummary.getDescription(), DESCRIPTION_BINDING);
              protocolMarshaller.marshall(appSummary.getStatus(), STATUS_BINDING);
              protocolMarshaller.marshall(appSummary.getStatusMessage(), STATUSMESSAGE_BINDING);
              protocolMarshaller.marshall(appSummary.getReplicationStatus(), REPLICATIONSTATUS_BINDING);
              protocolMarshaller.marshall(appSummary.getReplicationStatusMessage(), REPLICATIONSTATUSMESSAGE_BINDING);
              protocolMarshaller.marshall(appSummary.getLatestReplicationTime(), LATESTREPLICATIONTIME_BINDING);
              protocolMarshaller.marshall(appSummary.getLaunchStatus(), LAUNCHSTATUS_BINDING);
              protocolMarshaller.marshall(appSummary.getLaunchStatusMessage(), LAUNCHSTATUSMESSAGE_BINDING);
              protocolMarshaller.marshall(appSummary.getLaunchDetails(), LAUNCHDETAILS_BINDING);
              protocolMarshaller.marshall(appSummary.getCreationTime(), CREATIONTIME_BINDING);
              protocolMarshaller.marshall(appSummary.getLastModified(), LASTMODIFIED_BINDING);
              protocolMarshaller.marshall(appSummary.getRoleName(), ROLENAME_BINDING);
              protocolMarshaller.marshall(appSummary.getTotalServerGroups(), TOTALSERVERGROUPS_BINDING);
              protocolMarshaller.marshall(appSummary.getTotalServers(), TOTALSERVERS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.