get:
  displayName: 学生查看自己的小组
  queryParameters:
    courseId:
      description: 课程id
      type: integer
  is: [response: { typeName: 'Group[]' }]
post:
  displayName: 学生创建小组
  body:
    application/json:
      type: GroupDTO
  is: [response: { typeName: Group }]
put:
  displayName: 学生通过选组码加入小组
  body:
    application/json:
      type: object
      properties:
        code:
          type: string
          description: 选组码
  is: [response: { typeName: Group }]
/{groupId}:
  uriParameters: 
    groupId: 
      description: 小组id
      type: integer
  get:
    displayName: 老师获取小组信息
    is: [response: { typeName: Group }]