code: def device_resident_accept(self, visitor):
      super(StatefulMGU, self).device_resident_accept(visitor)
      if self.h is not None:
          visitor.visit_variable(self.h)
  
imports: import numpy
  import chainer
  from chainer.functions.activation import sigmoid
  from chainer.functions.activation import tanh
  from chainer.functions.array import concat
  from chainer.functions.math import linear_interpolate
  from chainer import link
  from chainer.links.connection import linear
label_desc: Use image node_id 2 for calling the StatefulMGU obj's underlying member method code with example usage: obj.device_resident_accept(visitor) without return types