code: def addobs(self, x):
      w, r = x
      assert w >= 0
      assert 0 <= r <= 1
  
      self.lower.addobs(w * r)
      self.upper.addobs(w * (1 - r))
  
label_desc: Use image node_id 2 for calling the OffPolicyCS obj's underlying member method code with example usage: obj.addobs(x) without return types