docs: private Document loadValidating(InputStream is) {
      try {
        return getDOMObject(is, true);
      } catch (SAXException e) {
        e.printStackTrace();
        System.out.println("Error parsing digital document from nitf inputstream.");
      } catch (IOException e) {
        e.printStackTrace();
        System.out.println("Error parsing digital document from nitf inputstream.");
      } catch (ParserConfigurationException e) {
        e.printStackTrace();
        System.out.println("Error parsing digital document from nitf inputstream.");
      }
      return null;
    }