docs: @Override
      public boolean isMyType(final Document document) {
          final Element e = document.getRootElement();
  
          if (e.getName().equals("opml") && (e.getChild("head") == null || e.getChild("head").getChild("docs") == null)
                  && (e.getAttributeValue("version") == null || e.getAttributeValue("version").equals("1.0"))) {
              return true;
          }
  
          return false;
      }