code: def forward(self, x):
      h = F.relu(self.bn1(self.conv1(x)))
      h = F.relu(self.bn2(self.conv2(h)))
      h = self.bn3(self.conv3(h))
  
      return F.relu(h + x)
  
imports: import chainer
  import chainer.functions
  from chainer import initializers
  import chainer.links
label_desc: Use image node_id 2 for calling the BottleNeckB obj's underlying member method code with example usage: obj.forward(x) and returns: F