NW7.3 : Used DC for ResourceContext & IConnectorGatewayService

Hello,

I am migrating code from NWDS 7.0 to NWDS 7.3 and I get import errors at ResourceContext & IConnectorGatewayService class/interfaces.

Could someone please let me know which of the standard Used DCs I need to use for this?

And in case if I need to download JAR from Portal, how & from where I need to download it?

			IUser CMSADMIN_IUSER = WPUMFactory.getServiceUserFactory().getServiceUser("cmadmin_service"); ResourceContext RES_CONTEXT = new ResourceContext(CMSADMIN_IUSER); IResourceFactory RES_FACTORY = ResourceFactory.getInstance(); IConnectorGatewayService cg = (IConnectorGatewayService)PortalRuntime.getRuntimeResources().getService(IConnectorGatewayService.KEY);
			ConnectionProperties connProp = new ConnectionProperties(request.getLocale(), request.getUser());
			connection = cg.getConnection(systemIdentifier, connProp);
			IInteraction interaction = connection.createInteractionEx();
			IInteractionSpec interactionSpec = interaction.getInteractionSpec();
			interactionSpec.setPropertyValue(NAME, Z_BAPI_EMP_GBU_GET);
			RecordFactory recordFactory = interaction.getRecordFactory();
			MappedRecord importParams = recordFactory.createMappedRecord(IMPORT_PARAMS);
			importParams.put(OBJTYP, US);
			MappedRecord exportParams = (MappedRecord) interaction.execute(interactionSpec, importParams);