def on_data(self, pid, data):
        if pid == self.link_proto.PID_TRK_DATA_ARRAY:
            self.count += data.num_valid_wpt - 1
        super(A301, self).on_data(pid, data)
PID_TRK_DATA_ARRAY return multiple data objects per
dataset/ETHPy150Open braiden/python-ant-downloader/antd/garmin.py/A301.on_data