class_docstr: A generic tree node.
  
  Parameters
  ----------
  kwargs
      Each provided keyword argument is stored in the leaf as an attribute.
class_docstr_tok: ["A","generic","tree","node",".","Parameters","--","--","--","--","--","kwargs","Each","provided","keyword","argument","is","stored","in","the","leaf","as","an","attribute","."]
docstr: String representation for visualization purposes.
docstr_tok: ["String","representation","for","visualization","purposes","."]
code: def __repr__(self):
      """String representation for visualization purposes."""
  
imports: from __future__ import annotations
  import abc
  import typing
  from collections import defaultdict
  from queue import Queue
  from xml.etree import ElementTree
  import pandas
  from river import base
label_desc: Use image node_id 3 for calling the Leaf obj's underlying member method code with example usage: obj.__repr__() without return types