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 new entry in the toc from the node at given level.
code: def new_navpoint(
      self, node: dict[str, Any], level: int, incr: bool = True
  ) -> NavPoint:
      """Create a new entry in the toc from the node at given level."""
      # XXX Modifies the node
      if incr:
          self.playorder += 1
      self.tocid += 1
      return NavPoint(
          "navPoint%d" % self.tocid,
          self.playorder,
          node["text"],
          node["refuri"],
          [],
      )
  
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 23 for calling the EpubBuilder obj's underlying member method code with example usage: obj.new_navpoint(node, level, incr) and returns: NavPoint