class_docstr: An estimator.
class_docstr_tok: ["An","estimator","."]
code: def _repr_html_(self):
      from xml.etree import ElementTree as ET
  
      from river.base import viz
  
      div = viz.to_html(self)
      div_str = ET.tostring(div, encoding="unicode")
      return f"<div>{div_str}<style scoped>{viz.CSS}</style></div>"
  
file_path: river/river/base/estimator.py
imports: from __future__ import annotations
  import abc
  from .None import base
label_desc: Use image node_id 4 for calling the Estimator obj's underlying member method code with example usage: obj._repr_html_() and returns: str, div_str, str, viz, str