code: def __init__(self, left, right, threshold=None, **kwargs):
      super().__init__(left, right)
      self.threshold = threshold
      self.__dict__.update(kwargs)
  
file_path: river/river/tree/test_base.py
imports: from __future__ import annotations
  from river.tree.base import Branch, Leaf
label_desc: Use image node_id 1 to create a new BinaryBranch object from inherited base classes: Branch with example: obj = BinaryBranch(left, right, threshold)