docstr: Return a new instance of the CPU metrics.
docstr_tok: ["Return","a","new","instance","of","the","CPU","metrics","."]
code: def is_available(cls) -> bool:
      """Return a new instance of the CPU metrics."""
      return psutil is not None
  
imports: import threading
  from collections import deque
  from typing import TYPE_CHECKING, List, Optional
  from .aggregators import aggregate_mean
  from .asset_registry import asset_registry
  from .interfaces import Interface, Metric, MetricsMonitor
label_desc: Use image node_id 4 for calling the Memory obj's underlying member method code with example usage: obj.is_available(cls) and returns: unknown