code: @Override
      public void startElement(String uri, String local, String raw, Attributes atts) {
          if (NS_OWL.equals(uri)) {
              startOWLElement(local, atts);
          } else if (NS_ATOMTYPE_MAPPING.equals(uri)) {
              startAtomTypeMappingElement(local, atts);
          } // ignore other namespaces
      }
docs: {@inheritDoc}