class_docstr: Builder that outputs epub files.
  
  It creates the metainfo files container.opf, toc.ncx, mimetype, and
  META-INF/container.xml.  Afterwards, all necessary files are zipped to an
  epub file.
class_docstr_tok: ["Builder","that","outputs","epub","files",".","It","creates","the","metainfo","files","container.opf",",","toc.ncx",",","mimetype",",","and","META-INF\/container.xml",".","Afterwards",",","all","necessary","files","are","zipped","to","an","epub","file","."]
docstr: Create a dictionary with all metadata for the toc.ncx file
  properly escaped.
code: def toc_metadata(
      self, level: int, navpoints: list[NavPoint]
  ) -> dict[str, Any]:
      """Create a dictionary with all metadata for the toc.ncx file
      properly escaped.
      """
      metadata: dict[str, Any] = {}
      metadata["uid"] = self.config.epub_uid
      metadata["title"] = html.escape(self.config.epub_title)
      metadata["level"] = level
      metadata["navpoints"] = navpoints
      return metadata
  
imports: from __future__ import annotations
  import html
  import os
  import re
  import time
  from os import path
  from typing import TYPE_CHECKING, Any, NamedTuple
  from urllib.parse import quote
  from zipfile import ZIP_DEFLATED, ZIP_STORED, ZipFile
  from docutils import nodes
  from docutils.utils import smartquotes
  from sphinx import addnodes
  from sphinx.builders.html import BuildInfo, StandaloneHTMLBuilder
  from sphinx.locale import __
  from sphinx.util import logging
  from sphinx.util.display import status_iterator
  from sphinx.util.fileutil import copy_asset_file
  from sphinx.util.osutil import copyfile, ensuredir, relpath
label_desc: Use image node_id 25 for calling the EpubBuilder obj's underlying member method code with example usage: obj.toc_metadata(level, navpoints) and returns: metadata