class_docstr: Implements the `stats.base.Univariate` interface but always returns the same value.
  
  Parameters
  ----------
  value
class_docstr_tok: ["Implements","the","`","stats.base.Univariate","`","interface","but","always","returns","the","same","value",".","Parameters","--","--","--","--","--","value"]
code: def update(self, x):
      ...
  
file_path: river/river/preprocessing/impute.py
imports: from __future__ import annotations
  import typing
  from river import base, stats
label_desc: Use image node_id 2 for calling the Constant obj's underlying member method code with example usage: obj.update(x) without return types