class_docstr: A base class of unified devices.
  
  Chainer has the following concrete implementations:
  
  - :class:`chainer.backend.CpuDevice`
  - :class:`chainer.backend.GpuDevice`
  - :class:`chainer.backend.Intel64Device`
  - :class:`chainer.backend.ChainerxDevice`
class_docstr_tok: ["A","base","class","of","unified","devices",".","Chainer","has","the","following","concrete","implementations",":","-",":","class",":","`","chainer.backend.CpuDevice","`","-",":","class",":","`","chainer.backend.GpuDevice","`","-",":","class",":","`","chainer.backend.Intel64Device","`","-",":","class",":","`","chainer.backend.ChainerxDevice","`"]
docstr: Array module corresponding to the device.
docstr_tok: ["Array","module","corresponding","to","the","device","."]
code: def xp(self):
      """Array module corresponding to the device."""
      raise NotImplementedError(
          "Device implementation must override this property."
      )
  
label_desc: Use image node_id 1 for calling the Device obj's underlying member method code with example usage: obj.xp() without return types