code: def set_device(self, device_idx):
      return f"torch.cuda.set_device({device_idx})"
  
imports: from ..common import DeviceOpOverrides
label_desc: Use image node_id 2 for calling the CUDADeviceOpOverrides obj's underlying member method code with example usage: obj.set_device(device_idx) and returns: str, device_idx, str