/**
* 创建流程定义持久化
*/
public ProcessDefinitionPersistence createProcessDefinitionPersistence(Connection connection){
ExpandClassConfig expandClassConfig=processEngineConfiguration.getExpandClassConfig();
List<ExpandClass> expandClasses=expandClassConfig.getExpandClass();
for (ExpandClass expandClass : expandClasses) {
if(expandClass.getClassId().equals("ProcessDefinitionPersistence")){
Object[] objTemp = new Object[] {connection};
ProcessDefinitionPersistence processDefinitionPersistence =(ProcessDefinitionPersistence) ReflectUtil.instantiate(expandClass.getClassImpl(),objTemp);
return processDefinitionPersistence;