class_docstr: Copies the input variable onto the specified device.
code: def forward(self, inputs):
      (x,) = inputs
      return (self.out_device.send(x),)
  
file_path: chainer/chainer/functions/array/copy.py
imports: import chainer
  from chainer import backend
  from chainer.backends import cuda
  from chainer import function_node
  from chainer.utils import type_check
  import chainerx
label_desc: Use image node_id 3 for calling the Copy obj's underlying member method code with example usage: obj.forward(inputs) and returns: self