esrally/metrics.py [524:551]:
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        name,
        value,
        unit=None,
        task=None,
        operation=None,
        operation_type=None,
        sample_type=SampleType.Normal,
        absolute_time=None,
        relative_time=None,
        meta_data=None,
    ):
        """
        Adds a new cluster level value metric.

        :param name: The name of the metric.
        :param value: The metric value. It is expected to be numeric.
        :param unit: The unit of this metric value (e.g. ms, docs/s). Optional. Defaults to None.
        :param task: The task name to which this value applies. Optional. Defaults to None.
        :param operation: The operation name to which this value applies. Optional. Defaults to None.
        :param operation_type: The operation type to which this value applies. Optional. Defaults to None.
        :param sample_type: Whether this is a warmup or a normal measurement sample. Defaults to SampleType.Normal.
        :param absolute_time: The absolute timestamp in seconds since epoch when this metric record is stored. Defaults to None. The metrics
               store will derive the timestamp automatically.
        :param relative_time: The relative timestamp in seconds since the start of the benchmark when this metric record is stored.
               Defaults to None. The metrics store will derive the timestamp automatically.
        :param meta_data: A dict, containing additional key-value pairs. Defaults to None.
        """
        self._put_metric(
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esrally/metrics.py [569:597]:
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        name,
        value,
        unit=None,
        task=None,
        operation=None,
        operation_type=None,
        sample_type=SampleType.Normal,
        absolute_time=None,
        relative_time=None,
        meta_data=None,
    ):
        """
        Adds a new node level value metric.

        :param name: The name of the metric.
        :param node_name: The name of the cluster node for which this metric has been determined.
        :param value: The metric value. It is expected to be numeric.
        :param unit: The unit of this metric value (e.g. ms, docs/s). Optional. Defaults to None.
        :param task: The task name to which this value applies. Optional. Defaults to None.
        :param operation: The operation name to which this value applies. Optional. Defaults to None.
        :param operation_type: The operation type to which this value applies. Optional. Defaults to None.
        :param sample_type: Whether this is a warmup or a normal measurement sample. Defaults to SampleType.Normal.
        :param absolute_time: The absolute timestamp in seconds since epoch when this metric record is stored. Defaults to None. The metrics
               store will derive the timestamp automatically.
        :param relative_time: The relative timestamp in seconds since the start of the benchmark when this metric record is stored.
               Defaults to None. The metrics store will derive the timestamp automatically.
        :param meta_data: A dict, containing additional key-value pairs. Defaults to None.
        """
        self._put_metric(
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