class_docstr: Function that broadcasts an array to a new shape.
class_docstr_tok: ["Function","that","broadcasts","an","array","to","a","new","shape","."]
code: def backward(self, indexes, grad_outputs):
      (gx,) = grad_outputs
      (x_node,) = self.inputs
      return (chainer.functions.sum_to(gx, x_node.shape),)
  
imports: import six
  import chainer
  from chainer import backend
  from chainer import function_node
  from chainer.utils import type_check
  import chainerx
label_desc: Use image node_id 5 for calling the BroadcastTo obj's underlying member method code with example usage: obj.backward(indexes, grad_outputs) and returns: chainer