/**
  * Returns the supplied MIME type customized for the supplied media renderer according to the
  * renderer's aliasing rules.
  *
  * @param mimetype MIME type to customize.
  * @param renderer media renderer to customize the MIME type for.
  * @return The MIME type
  */
 public String getRendererMimeType(String mimetype, RendererConfiguration renderer) {
   return renderer.getMimeType(mimetype);
 }