CamelContext ctx = applicationContext.getBean(CamelContext.class);
ProducerTemplate tpl = ctx.createProducerTemplate();
MockEndpoint me = (MockEndpoint) ctx.getEndpoint("mock:service1");
me.expectedBodiesReceived("ala");
tpl.sendBodyAndProperty("direct:start", Collections.singletonMap("var1", "ala"), ActivitiProducer.PROCESS_KEY_PROPERTY, "key1");
String instanceId = runtimeService.createProcessInstanceQuery().processInstanceBusinessKey("key1")
.singleResult().getProcessInstanceId();
tpl.sendBodyAndProperty("direct:receive", null, ActivitiProducer.PROCESS_KEY_PROPERTY, "key1");