class_docstr: A univariate statistic measures a property of a variable.
code: def name(self):
      return self.__class__.__name__.lower()
  
imports: from __future__ import annotations
  import abc
  import numbers
  from river import base
label_desc: Use image node_id 2 for calling the Univariate obj's underlying member method code with example usage: obj.name() and returns: self