message: Populate all course reference arrays
diff: @@ -19,7 +19,12 @@ export class CourseController {
  @Get('/:id')
  getCourse(@Param('id') id: string) {
  return Course.findById(id)
  - .then((c) => c.toObject());
  + .populate('lectures')
  + .populate('courseAdmin')
  + .populate('students')
  + .then((course) => {
  + return course.toObject();
  + });
  }
  @Post('/')
  