code: def log_class_usage(klass):
      identifier = subsystem_name
      if klass and hasattr(klass, "__name__"):
          identifier += f".{klass.__name__}"
      torch._C._log_api_usage_once(identifier)
  
imports: import torch
label_desc: Use image node_id 1 for calling a global function with example usage: log_class_usage(klass) without return types