'GET /api/team/v0/topics/{topic_id},{course_id}/'

def get(self, request, topic_id, course_id):

    try:
        course_id = CourseKey.from_string(course_id)
    except InvalidKeyError:
        return Response(status=status.HTTP_404_NOT_FOUND)
    course_module = modulestore().get_course(course_id)
    if (course_module is None):
        return Response(status=status.HTTP_404_NOT_FOUND)
    if (not has_team_api_access(request.user, course_id)):
        return Response(status=status.HTTP_403_FORBIDDEN)
    topics = [t for t in course_module.teams_topics if (t['id'] == topic_id)]
    if (len(topics) == 0):
        return Response(status=status.HTTP_404_NOT_FOUND)
    serializer = TopicSerializer(topics[0], context={'course_id': course_id})
    return Response(serializer.data)
