private Set<String> getApplications(RestApi.RequestContext context) {
        Set<ApplicationId> refs = orchestrator.getAllSuspendedApplications();
        return refs.stream().map(ApplicationId::serializedForm).collect(Collectors.toSet());
    }
Lists all applications that are currently suspended.

HTTP Behavior:
Always 200

@return A list of application ids of suspended applications
orchestrator/src/main/java/com/yahoo/vespa/orchestrator/resources/ApplicationSuspensionRequestHandler.java