code: def memory_utilization():
      data = psutil.virtual_memory().percent
      system_metrics.append(
          Metric("MemoryUtilization", 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 4 for calling a global function with example usage: memory_utilization() without return types