docstr: Returns the GPU utilization (in percentile),
  or None if the information is not available.
docstr_tok: ["Returns","the","GPU","utilization","(","in","percentile",")",",","or","None","if","the","information","is","not","available","."]
code: def utilization(self):
      """
      Returns the GPU utilization (in percentile),
      or None if the information is not available.
      """
      v = self.entry["utilization.gpu"]
      return int(v) if v is not None else None
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import json
  import platform
  import sys
  from datetime import datetime
  import psutil
  from ..gpu import pynvml
label_desc: Use image node_id 13 for calling the GPUStat obj's underlying member method code with example usage: obj.utilization() and returns: unknown