code: def device_name(self, device_index=None):
      if device_index == None:
          return "xpu"
      return "xpu:{}".format(device_index)
  
imports: import torch
  from deepspeed.accelerator.abstract_accelerator import DeepSpeedAccelerator
  import intel_extension_for_pytorch
  import oneccl_bindings_for_pytorch
label_desc: Use image node_id 3 for calling the XPU_Accelerator obj's underlying member method code with example usage: obj.device_name(device_index) and returns: str, str