def compose(self) -> ComposeResult:
        """Compose the content of the navigation pane."""
        self.popped_out = False
        # pylint:disable=attribute-defined-outside-init
        self._contents = TableOfContents()
        self._local_files = LocalFiles()
        self._bookmarks = Bookmarks()
        self._history = History()
        with TabbedContent() as tabs:
            self._tabs = tabs
            yield self._contents
            yield self._local_files
            yield self._bookmarks
            yield self._history
Compose the content of the navigation pane.
frogmouth/widgets/navigation.py