#end
            } else {
                this.base = base;
            }
        }

    #if ( $class == $root )
        @Nonnull
        public Builder namespaceUri(String namespaceUri) {
            this.namespaceUri = namespaceUri;
            return this;
        }

        @Nonnull
        public Builder modelEncoding(String modelEncoding) {
            this.modelEncoding = modelEncoding;

        @Override
        public void writeEmptyElement(String namespaceURI, String localName) throws XMLStreamException {
            indent();
            super.writeEmptyElement(namespaceURI, localName);
            hasChildren = true;
            anew = false;
        }

        @Override
        public void writeEmptyElement(String prefix, String localName, String namespaceURI) throws XMLStreamException {
            indent();

            if (wildcard && testPrefix == null) {
                return true;
            }
            if (wildcard || testName.equals(nodeName)) {
                return (namespaceURI == null || namespaceURI.isEmpty()) || (testPrefix == null || testPrefix.isEmpty());
            }
            return false;
        }
        if (test instanceof NodeTypeTest) {
            switch (((NodeTypeTest) test).getNodeType()) {

    public XmlNodeImpl(
            String prefix,
            String namespaceUri,
            String name,
            String value,
            Map<String, String> attributes,
            List<XmlNode> children,
            Object location) {
        this.prefix = prefix == null ? "" : prefix;
        this.namespaceUri = namespaceUri == null ? "" : namespaceUri;
        this.name = Objects.requireNonNull(name);
        this.value = value;

        @Override
        public void writeEmptyElement(String namespaceURI, String localName) throws XMLStreamException {
            indent();
            super.writeEmptyElement(namespaceURI, localName);
            hasChildren = true;
        }

        @Override
        public void writeEmptyElement(String prefix, String localName, String namespaceURI) throws XMLStreamException {
            indent();

    @Test
    void testModelVersion() {
        Model initial = new Model(org.apache.maven.api.model.Model.newBuilder()
                .namespaceUri("http://maven.apache.org/POM/4.0.0")
                .build());
        Model expected = new Model(org.apache.maven.api.model.Model.newBuilder()
                .namespaceUri("http://maven.apache.org/POM/4.0.0")
                .modelVersion("4.0.0")
                .build());

        authors = ivy.info[0].ivyauthor

        extraInfo = [:]
        ivy.info[0].children().findAll { it.name() instanceof QName }.each {
            extraInfo[new javax.xml.namespace.QName(it.name().namespaceURI, it.name().localPart)] = it.text()
        }

        ivy.configurations.conf.each {
            configurations[it.@name] = new IvyDescriptorConfiguration(

        then:
        ivyXml.info."foo".size() == 1
        ivyXml.info."foo"[0].namespaceURI() == "http://namespace/foo"
        ivyXml.info."foo"[0].text() == 'fooValue'
        ivyXml.info."bar".size() == 1
        ivyXml.info."bar"[0].namespaceURI() == "http://namespace/bar"
        ivyXml.info."bar"[0].text() == 'barValue'
    }

    def "writes supplied configurations"() {

  <mime-type type="application/vnd.google-earth.kml+xml">
    <root-XML localName="kml"/>
    <root-XML namespaceURI="http://www.opengis.net/kml/2.2" localName="kml"/>
    <root-XML namespaceURI="http://earth.google.com/kml/2.0" localName="kml"/>
    <root-XML namespaceURI="http://earth.google.com/kml/2.1" localName="kml"/>
    <root-XML namespaceURI="http://earth.google.com/kml/2.2" localName="kml"/>
    <acronym>KML</acronym>

            synchronized (this) {
                if (pluginDescriptorV4 == null) {
                    pluginDescriptorV4 = org.apache.maven.api.plugin.descriptor.PluginDescriptor.newBuilder()
                            .namespaceUri(null)
                            .modelEncoding(null)
                            .name(name)
                            .description(description)
                            .groupId(groupId)