class_docstr: Repeat elements of an array.
class_docstr_tok: ["Repeat","elements","of","an","array","."]
code: def backward(self, indexes, grad_outputs):
      (x,) = self.get_retained_inputs()
      return RepeatGrad(
          self.repeats, self.axis, x.shape, x.dtype
      ).apply(grad_outputs)
  
file_path: chainer/chainer/functions/array/repeat.py
imports: import six
  from chainer import backend
  from chainer import function_node
  from chainer import utils
  from chainer.utils import type_check
label_desc: Use image node_id 4 for calling the Repeat obj's underlying member method code with example usage: obj.backward(indexes, grad_outputs) and returns: RepeatGrad