code: def most_common_path(self):
      raise NotImplementedError
  
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 3 for calling the BinaryBranch obj's underlying member method code with example usage: obj.most_common_path() without return types