code: def _get_chainerx_device(device_spec):
      # Returns chainerx.Device
      if isinstance(device_spec, chainerx.Device):
          return device_spec
      return chainerx.get_device(device_spec)
  
imports: import numpy
  import chainer
  from chainer import _backend
  from chainer.backends import _cpu
  from chainer.backends import cuda
  from chainer.backends import intel64
  import chainerx
label_desc: Use image node_id 3 for calling a global function with example usage: _get_chainerx_device(device_spec) and returns: chainerx, device_spec