code: def _set_title(self) -> None:
      warnings.warn(
          "_set_title is no longer used in MkDocs and will be removed soon.",
          DeprecationWarning,
      )
  
imports: from __future__ import annotations
  import copy
  import enum
  import logging
  import posixpath
  import warnings
  from typing import TYPE_CHECKING, Any, Callable, Iterator, MutableMapping, Sequence
  from urllib.parse import unquote
  from urllib.parse import urljoin, urlsplit, urlunsplit
  import markdown
  import markdown.htmlparser
  import markdown.postprocessors
  import markdown.treeprocessors
  from markdown.util import AMP_SUBSTITUTE
  from mkdocs import utils
  from mkdocs.structure import StructureItem
  from mkdocs.structure.toc import get_toc
  from mkdocs.utils import _removesuffix, get_build_date, get_markdown_title, meta, weak_property
label_desc: Use image node_id 12 for calling the Page obj's underlying member method code with example usage: obj._set_title() without return types