code: def _get_open_metrics_assets(self) -> List["Asset"]:
      open_metrics_endpoints = (
          self.settings._stats_open_metrics_endpoints
      )
      if not open_metrics_endpoints:
          return []
  
      assets: List[Asset] = []
      for name, endpoint in open_metrics_endpoints.items():
          if not OpenMetrics.is_available(url=endpoint):
              continue
          logger.debug(f"Monitoring OpenMetrics endpoint: {endpoint}")
          open_metrics = OpenMetrics(
              interface=self.asset_interface or self.backend_interface,
              settings=self.settings,
              shutdown_event=self._shutdown_event,
              name=name,
              url=endpoint,
          )
          assets.append(open_metrics)  # type: ignore
  
      return assets
  
imports: import datetime
  import logging
  import queue
  import threading
  from collections import defaultdict, deque
  from typing import TYPE_CHECKING, Deque, Dict, List, Optional, Tuple
  from .assets.asset_registry import asset_registry
  from .assets.interfaces import Asset, Interface
  from .assets.open_metrics import OpenMetrics
  from .system_info import SystemInfo
label_desc: Use image node_id 3 for calling the SystemMonitor obj's underlying member method code with example usage: obj._get_open_metrics_assets() and returns: assets, list