code: def on_accelerator(self, tensor):
      device_str = str(tensor.device)
      if device_str.startswith("npu:"):
          return True
      else:
          return False
  
imports: import importlib
  import inspect
  from .abstract_accelerator import DeepSpeedAccelerator
label_desc: Use image node_id 57 for calling the NPU_Accelerator obj's underlying member method code with example usage: obj.on_accelerator(tensor) and returns: True, False