code: public void setAside(String text) {
          if (text == null)
              throw new RuntimeException("Cannot set aside to null. Call removeAside() if you wanted to remove the aside text");
  
          if (asideElem == null)
              createAndAttachAsideElem();
          asideElem.setInnerText(text);
      }
docs: Sets the content of the aside. The aside is supplemental content that
  is positioned to the right of the main content.