code: public static SafeHtml fromScriptUrl(TrustedResourceUrl trustedResourceUrl) {
      String escapedUrl = htmlEscapeInternal(trustedResourceUrl.getTrustedResourceUrlString());
      return create("<script type=\"text/javascript\" src=\"" + escapedUrl + "\"></script>");
    }
docs: Creates a &lt;script type="text/javascript" src="<i>url</i>"&gt;&lt;script&gt; where the
  {@code src} attribute points to the given {@code trustedResourceUrl}.