class_docstr: Function that slices array and extract elements.
class_docstr_tok: ["Function","that","slices","array","and","extract","elements","."]
code: def backward(self, indexes, gy):
      return GetItemGrad(self.slices, self.inputs[0].shape).apply(gy)
  
imports: import numpy
  import chainer
  from chainer import backend
  from chainer import function_node
  from chainer import utils
  from chainer.utils import type_check
  from chainer import variable
  import chainerx
label_desc: Use image node_id 4 for calling the GetItem obj's underlying member method code with example usage: obj.backward(indexes, gy) and returns: GetItemGrad