protected function migrateClassroom($srcClassroom) {
        $classroom = Classroom::firstOrNew([
            'name' => $srcClassroom->name,
        ]);
        $classroom->save();
        $this->addCourseToClassroom($classroom, $srcClassroom->course_id);
        $classroom->shortname = $srcClassroom->shortName;
        $classroom->description = $srcClassroom->description;
        $classroom->code = $srcClassroom->external_code;
    }