public String getNodeValue() {
            return nodeValue;
        }

        // Other Node methods (not needed for testing, returning defaults)

        @Override
        public Node getParentNode() {
            return null;
        }

        @Override
        public org.w3c.dom.NodeList getChildNodes() {
            return null;
        }

        @Override

                                    break;
                                }
                            }
                        }
                    }

                    parent = parent.getParentNode();
                }
            }

            if (StringUtil.isNotBlank(namespace)) {
                return namespace;
            }
            return "http://crawler.codelibs.org/namespace/" + prefix;