app端：开始上课中，新增预约接口

lisy

2023-08-04 c70c9ecf1bee12e85778dc268308c872b95e477f

 cloud-server-management/src/main/java/com/dsh/course/mapper/RegionMapper.java

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package com.dsh.course.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.dsh.guns.modular.system.model.Region;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface RegionMapper extends BaseMapper<Region> {

}