code: def __call__(self, x):
      h1 = chx.maximum(0, self.bn1(self.conv1(x)))
      h1 = chx.maximum(0, self.bn2(self.conv2(h1)))
      h1 = self.bn3(self.conv3(h1))
      h2 = self.bn4(self.conv4(x))
      return chx.maximum(0, h1 + h2)
  
imports: import numpy
  import chainerx
label_desc: Use image node_id 2 for calling the BottleNeckA obj's underlying member method code with example usage: obj.__call__(x) and returns: chx