class_docstr: Predefined distribution class for 2-class classification problems.
code: def gamma(self, w, y, z, f):
      ff = y - z
      return [w * z, w * ff * (1 - ff)]
  
label_desc: Use image node_id 5 for calling the CustomDistributionBernoulli obj's underlying member method code with example usage: obj.gamma(w, y, z, f) and returns: list