Function addNewStudentUserCourse
- addNewStudentUserCourse(    token: string,    email: string,    studentnumber: string,    firstname: string,    lastname: string,    studentGroupId: undefined | null | number,    courseId: undefined | null | number,): Promise<any> - Parameters- token: string
- email: string
- studentnumber: string
- firstname: string
- lastname: string
- studentGroupId: undefined | null | number
- courseId: undefined | null | number
 
- Returns Promise<any>