def METHOD_NAME(self):
    bbox = BoundingBox(10, 10, 20, 20)
    dot  = DetectedObjectType("test", 0.4)
    do = DetectedObject(bbox, 0.4, dot)
    track = Track()
    for i in range(10):
        track.append(ObjectTrackState(i, i, do))
    self.track_ = track
    self.time_1 = Timestamp()
    self.time_1.set_time_seconds(1234)
    self.time_2 = Timestamp()
    self.time_2.set_time_seconds(4321)
    self.obj_ts = ObjectTrackSet([self.track_])
    self.act_type = ActivityType("self_act", 0.87)
    self.act = Activity(1, "self_act", 0.87, self.act_type, self.time_1, self.time_2, self.obj_ts)