code: def _cpu_stats(self):
      import psutil
  
      percents = psutil.cpu_percent(None, True)
      stats = {}
      if self._cpu_percent_init:
          i = 0
          for percent in percents:
              stats[f"sys/cpu{i}/util"] = percent / 100
              i += 1
          if percents:
              stats["sys/cpu/util"] = (
                  sum(percents) / len(percents) / 100
              )
      self._cpu_percent_init = True
      return stats
  
imports: from guild.plugins.summary_util import SummaryPlugin
label_desc: Use image node_id 4 for calling the CPUPlugin obj's underlying member method code with example usage: obj._cpu_stats() and returns: stats