Flowable newTask

根据当前Task创建一个新的Task，注意同时也要创建历史Task。

@Test
void createTask() {
    Task currentTask = null;
    TaskEntity taskEntity = (TaskEntity)taskService.newTask();
    taskEntity.setCategory(currentTask.getCategory());
    taskEntity.setDescription(currentTask.getDescription());
    taskEntity.setTenantId(currentTask.getTenantId());
    taskEntity.setAssignee(currentTask.getAssignee());
    taskEntity.setName(currentTask.getName());
    taskEntity.setProcessDefinitionId(currentTask.getProcessDefinitionId());
    taskEntity.setProcessInstanceId(currentTask.getProcessInstanceId());
    taskEntity.setTaskDefinitionId(currentTask.getTaskDefinitionId());
    taskEntity.setPriority(currentTask.getPriority());
    taskEntity.setCreateTime(new Date());
    taskService.saveTask(taskEntity);

    Command<Boolean> updateHistoryTaskCmd = new Command<Boolean>() {
        @Override
        public Boolean execute(CommandContext commandContext) {
            HistoricTaskService historicTaskService = CommandContextUtil.getHistoricTaskService();
            HistoricTaskInstanceEntity historicTask = historicTaskService.getHistoricTask(taskEntity.getId());
            historicTask.setProcessDefinitionId(currentTask.getProcessDefinitionId());
            historicTask.setProcessInstanceId(currentTask.getProcessInstanceId());
            historicTask.setCreateTime(new Date());
            historicTaskService.updateHistoricTask(historicTask, true);
            return true;
        }
    };
    managementService.executeCommand(updateHistoryTaskCmd);
}