Check if user is {registered, student, teacher} on a specific Course Instance about labtool HOT 3 CLOSED

 GET to address {BackendGiveAddressForUs} OHID from parameter, TOKEN from Authorization Header.

        IF (TEACHER)
            {
                                
                role: teaher,
                Student Instances: [Student Instances]
                    .. weeks: [Weeks]
            }
        IF (STUDENT)
            {
                                
                role: student,
                Student Instance: Student Instance
                weeks: [Weeks]
            }
        IF (NEITHER)
            {
                NOTHINGLESS
            }