Provide access to the Navigation Bar.

        Returns:
            :py:class:`NavBar`: FoxPuppet NavBar object.

def navbar(self):
        """Provide access to the Navigation Bar.

        Returns:
            :py:class:`NavBar`: FoxPuppet NavBar object.

        """
        window = BaseWindow(self.selenium, self.selenium.current_window_handle)
        with self.selenium.context(self.selenium.CONTEXT_CHROME):
            el = self.selenium.find_element(*self._nav_bar_locator)
            return NavBar(window, el)