class_docstr: The Stream Max RAM metric.
  
  This plugin metric only works at eval time.
class_docstr_tok: ["The","Stream","Max","RAM","metric",".","This","plugin","metric","only","works","at","eval","time","."]
code: def __str__(self):
      return "MaxRAMUsage_Stream"
  
imports: import os
  import time
  from typing import Optional, List, TYPE_CHECKING
  from threading import Thread
  from psutil import Process
  from avalanche.evaluation import Metric, PluginMetric, GenericPluginMetric
  from avalanche.evaluation.metric_results import MetricResult
label_desc: Use image node_id 4 for calling the StreamMaxRAM obj's underlying member method code with example usage: obj.__str__() and returns: str