    def merge(files, accumulate=True):
        """Merge metrics from given mmap files.

        By default, histograms are accumulated, as per prometheus wire format.
        But if writing the merged data back to mmap files, use
        accumulate=False to avoid compound accumulation.
        """
        metrics = MultiProcessCollector._read_metrics(files)
        return MultiProcessCollector._accumulate_metrics(metrics, accumulate)
Merge metrics from given mmap files.

By default, histograms are accumulated, as per prometheus wire format.
But if writing the merged data back to mmap files, use
accumulate=False to avoid compound accumulation.
prometheus_client/multiprocess.py