def METHOD_NAME(self, queue_manager):
    """
    Collect Statistics Messages
    Docs: https://www.ibm.com/support/knowledgecenter/SSFKSJ_9.1.0/com.ibm.mq.mon.doc/q037320_.htm
    """
    self.log.debug("Collecting stats newer than %s", self.config.instance_creation_datetime)
    queue = Queue(queue_manager, STATISTICS_QUEUE_NAME)
    try:
        # It's expected for the loop to stop when pymqi.MQMIError is raised with reason MQRC_NO_MSG_AVAILABLE.
        while True:
            bin_message = queue.get()
            self.log.trace('Stats binary message: %s', bin_message)
            message, header = pymqi.PCFExecute.unpack(bin_message)
            self.log.trace('Stats unpacked message: %s, Stats unpacked header: %s', message, header)
            stats = self._get_stats(message, header)
            # We only collect metrics generated after the check instance creation.
            if stats.start_datetime < self.config.instance_creation_datetime:
                self.log.debug(
                    "Skipping messages created before agent startup. "
                    "Message time: %s / Check instance creation time: %s",
                    stats.start_datetime,
                    self.config.instance_creation_datetime,
                )
                continue
            if isinstance(stats, ChannelStats):
                self._collect_channel_stats(stats)
            elif isinstance(stats, QueueStats):
                self._collect_queue_stats(stats)
            else:
                self.log.debug('Unknown/NotImplemented command: %s', header.Command)
    except pymqi.MQMIError as e:
        # Don't warn if no messages, see:
        # https://github.com/dsuch/pymqi/blob/v1.12.0/docs/examples.rst#how-to-wait-for-multiple-messages
        if e.comp == pymqi.CMQC.MQCC_FAILED and e.reason == pymqi.CMQC.MQRC_NO_MSG_AVAILABLE:
            self.log.debug("No messages available")
        else:
            raise
    finally:
        try:
            queue.close()
        except pymqi.PYIFError as e:
            self.log.debug("Could not close queue: %s", str(e))