code: def _create_fwd_inputs_outputs(self, inputs, outputs):
      dy = inputs[0].data
      x0 = inputs[1].data
      ishape = x0.shape
      wshape = self.wshape
      oshape = dy.shape
      inputs_fwd = [
          nn.Variable(ishape, need_grad=True),
          nn.Variable(wshape, need_grad=True),
      ]
      outputs_fwd = [nn.Variable(oshape)]
      return inputs_fwd, outputs_fwd
  
imports: import nnabla
  from nnabla.function import PythonFunction
label_desc: Use image node_id 9 for calling the LinearFilterGrad obj's underlying member method code with example usage: obj._create_fwd_inputs_outputs(inputs, outputs) and returns: inputs_fwd,  outputs_fwd