docs: public static boolean isNodeALevel(final BaseCSNodeWrapper<?> node) {
          switch (node.getNodeType()) {
              case CommonConstants.CS_NODE_APPENDIX:
              case CommonConstants.CS_NODE_CHAPTER:
              case CommonConstants.CS_NODE_PART:
              case CommonConstants.CS_NODE_PREFACE:
              case CommonConstants.CS_NODE_PROCESS:
              case CommonConstants.CS_NODE_SECTION:
              case CommonConstants.CS_NODE_INITIAL_CONTENT:
                  return true;
              default:
                  return false;
          }
      }