Add custom CSS style to SVG output

Question

Is it possible to add custom CSS rules in SVG output ?

Comments

I second this request - my use case is with "handwritten" drawings - I want to specify the xkcd Script font that I've put on my web site. Basically, I'd like to have a way to include information inside the SVG <defs></defs> element, e.g.:

<defs>
      <style type="text/css">
        @font-face {
          font-family: 'xkcd Script';
          src: url('https://cdn.rawgit.com/dummy-index/xkcd-font/master/xkcd-script/font/xkcd-script.ttf') format('truetype'),
            url('https://cdn.rawgit.com/dummy-index/xkcd-font/master/xkcd-script/font/xkcd-script.woff') format('woff');
        }
      </style>
</defs>

Hoping @plantuml can consider this