class_docstr: Helper class used to assemble branches designed by the splitters.
  
  If constructed using the default values, a null-split suggestion is assumed.
code: def __lt__(self, other):
      return self.merit < other.merit
  
imports: from __future__ import annotations
  import collections
  import copy
  import dataclasses
  import functools
  import math
  import sys
  import typing
  from river.base.typing import FeatureName
  from river.stats import Cov, Var
label_desc: Use image node_id 2 for calling the BranchFactory obj's underlying member method code with example usage: obj.__lt__(other) and returns: unknown