code: public void render() {
      try {
        this.response.setHeader("Content-type", "text/html; charset=UTF-8");
        this.response.setCharacterEncoding("UTF-8");
        this.response.setContentType(this.mimeType);
        this.engine.mergeTemplate(this.template, "UTF-8", this.context, this.response.getWriter());
      } catch (final Exception e) {
        throw new PageRenderException(e);
      }
    }
docs: Renders the page in UTF-8