RuntimeEngine runtimeEngine = manager.getRuntimeEngine(EmptyContext.get());
        KieSession ksession = runtimeEngine.getKieSession();

        Map<String, Object> params = new HashMap<>();
        params.put("supplyItem", item);

        ProcessInstance proc;
        try{
            proc = ksession.startProcess("com.example.bpms.simplesupplyitemapproval", params);
        }catch(WorkflowRuntimeException e){
            //Retry once. Starting a process could result in transient error when new users are added to the system.
            proc = ksession.startProcess("com.example.bpms.simplesupplyitemapproval", params);
        }

        System.out.println("Started process:" + proc);

        manager.disposeRuntimeEngine(runtimeEngine);