code: def _set_initial_metrics(self):
      # Set initial network usage metrics. `psutil.net_io_counters()` counts the stats since the
      # system boot, so to set network usage metrics as 0 when we start logging, we need to keep
      # the initial network usage metrics.
      network_usage = psutil.net_io_counters()
      self._initial_receive_megabytes = network_usage.bytes_recv / 1e6
      self._initial_transmit_megabytes = network_usage.bytes_sent / 1e6
  
imports: import psutil
  from mlflow.system_metrics.metrics.base_metrics_monitor import BaseMetricsMonitor
label_desc: Use image node_id 2 for calling the NetworkMonitor obj's underlying member method code with example usage: obj._set_initial_metrics() without return types