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