class_docstr: The average stream Disk usage metric.
  This plugin metric works only at eval time.
  
  At the end of the eval stream, this metric logs the total
  size (in KB) of all the monitored paths.
docstr: Creates an instance of the stream Disk usage metric.
docstr_tok: ["Creates","an","instance","of","the","stream","Disk","usage","metric","."]
code: def __init__(self, paths_to_monitor):
      """
      Creates an instance of the stream Disk usage metric.
      """
      super(StreamDiskUsage, self).__init__(
          paths_to_monitor,
          reset_at="stream",
          emit_at="stream",
          mode="eval",
      )
  
imports: import os
  from pathlib import Path
  from typing import Union, Sequence, List, Optional
  from avalanche.evaluation import Metric, GenericPluginMetric
label_desc: Use image node_id 1 to create a new StreamDiskUsage object from inherited base classes: DiskPluginMetric with example: obj = StreamDiskUsage(paths_to_monitor)