class_docstr: Expands dimensions of an input array without copy.
class_docstr_tok: ["Expands","dimensions","of","an","input","array","without","copy","."]
code: def backward(self, indexes, grad_outputs):
      (gx,) = grad_outputs
      return (chainer.functions.reshape(gx, self.inputs[0].shape),)
  
file_path: chainer/chainer/functions/array/expand_dims.py
imports: import chainer
  from chainer import backend
  from chainer import function_node
  from chainer.utils import type_check
label_desc: Use image node_id 4 for calling the ExpandDims obj's underlying member method code with example usage: obj.backward(indexes, grad_outputs) and returns: chainer