@Override
    public void resume(ApplicationId appId) throws ApplicationIdNotFoundException, ApplicationStateChangeDeniedException {
        setApplicationStatus(appId, ApplicationInstanceStatus.NO_REMARKS);
    }
Suspend normal operations for a group of nodes in the same application.

@param nodeGroup The group of nodes in an application.
@throws HostStateChangeDeniedException if the request cannot be met due to policy constraints.
orchestrator/src/main/java/com/yahoo/vespa/orchestrator/OrchestratorImpl.java