code: def _gpu_stats(self, stats_cmd):
      stats = {}
      for raw in self._read_raw_gpu_stats(stats_cmd):
          stats.update(self._calc_gpu_stats(raw))
      return stats
  
imports: import csv
  import io
  import subprocess
  import sys
  from guild import util
  from guild.plugins.summary_util import SummaryPlugin
label_desc: Use image node_id 4 for calling the GPUPlugin obj's underlying member method code with example usage: obj._gpu_stats(stats_cmd) and returns: stats