code: def forward(self, hs):
      h = self.c0(hs[-1])
      for i in range(1, 8):
          h = F.concat([h, hs[-i - 1]])
          if i < 7:
              h = self["c%d" % i](h)
          else:
              h = self.c7(h)
      return h
  
imports: from __future__ import print_function
  import chainer
  import chainer.functions
  import chainer.links
label_desc: Use image node_id 2 for calling the Decoder obj's underlying member method code with example usage: obj.forward(hs) and returns: h