class_docstr: An immutable DOM element.
code: def append(self, child: DOMElement) -> DOMElement:
      return dataclasses.replace(self, children=[*self.children, child])
  
imports: from __future__ import annotations
  import abc
  import dataclasses
  import functools
  import sys
  import uuid
  from typing import Any, Union
label_desc: Use image node_id 6 for calling the StaticDOMElement obj's underlying member method code with example usage: obj.append(child) and returns: dataclasses