How to use the harvesters._private.core.statistics.Statistics function in harvesters

event=self._event, threads=self._threads, logger=self._logger
            )
            signal.signal(signal.SIGINT, self._sigint_handler)
            self._logger.info('Created a signal handler for SIGINT.')

        #
        self._num_filled_buffers_to_hold = 1

        #
        self._num_images_to_acquire = -1

        #
        self._timeout_for_image_acquisition = 1  # ms

        #
        self._statistics = Statistics()

        #
        self._announced_buffers = []
        self._holding_filled_buffers = []

        #
        self._has_acquired_1st_image = False
        self._is_acquiring_images = False
        self._keep_latest = True

        # Determine the default value:
        num_buffers_default = 16
        try:
            self._min_num_buffers = self._data_streams[0].buffer_announce_min
        except InvalidParameterException as e:
            # In general, a GenTL Producer should not raise the

self._current_height = 0
        self._current_pixel_format = ''

        #
        self._num_images_to_hold_min = 1
        self._num_images_to_hold = self._num_images_to_hold_min

        #
        self._num_images_to_acquire = -1

        #
        self._timeout_for_image_acquisition = 1  # ms

        #
        self._statistics_update_cycle = 1  # s
        self._statistics_latest = Statistics()
        self._statistics_overall = Statistics()
        self._statistics_list = [
            self._statistics_latest, self._statistics_overall
        ]

        #
        self._announced_buffers = []
        self._fetched_buffers = []

        #
        self._has_acquired_1st_image = False

        #
        self._updated_statistics = None
        self._signal_stop_image_acquisition = None

self._current_pixel_format = ''

        #
        self._num_images_to_hold_min = 1
        self._num_images_to_hold = self._num_images_to_hold_min

        #
        self._num_images_to_acquire = -1

        #
        self._timeout_for_image_acquisition = 1  # ms

        #
        self._statistics_update_cycle = 1  # s
        self._statistics_latest = Statistics()
        self._statistics_overall = Statistics()
        self._statistics_list = [
            self._statistics_latest, self._statistics_overall
        ]

        #
        self._announced_buffers = []
        self._fetched_buffers = []

        #
        self._has_acquired_1st_image = False

        #
        self._updated_statistics = None
        self._signal_stop_image_acquisition = None

        #