Move process in flowable

Backtrack.java

package com.mes.berry.controller;

import org.flowable.engine.RuntimeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class Backtrack {
	@Autowired
	private RuntimeService runtimeService;
	
	@RequestMapping("backtrack")
	private String hello() {
		runtimeService.createChangeActivityStateBuilder()
		.processInstanceId("c8f1e924-edc4-11e8-abde-34f39a963367")
		.moveActivityIdTo("operation2", "operation4").changeState();
		return "ok";
	}
}