How to add the following part on the page with vaadin 11?
<!-- = Google Fonts = -->
<script type="text/javascript">
WebFontConfig = {
google: {
families: ['Open+Sans:400,700,400italic,700italic:latin,latin-ext,cyrillic', 'Pacifico::latin']
}
};
(function () {
var wf = document.createElement('script');
wf.src = ('https:' == document.location.protocol ? 'https' : 'http') + '://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js';
wf.type = 'text/javascript';
wf.async = 'true';
var s = document.getElementsByTagName('script')[0]
;
s.parentNode.insertBefore(wf, s);
})();
</script>