code: def cpu_utilization():
      data = psutil.cpu_percent()
      system_metrics.append(
          Metric("CPUUtilization", data, "percent", dimension)
      )
  
file_path: serve/ts/metrics/system_metrics.py
imports: import logging
  import types
  from builtins import str
  import psutil
  from ts.metrics.dimension import Dimension
  from ts.metrics.metric import Metric
label_desc: Use image node_id 1 for calling a global function with example usage: cpu_utilization() without return types