/**
     * This default mode for combining a DOM node during merge means that where element names match, the process will
     * try to merge the element attributes and values, rather than overriding the recessive element completely with the
     * dominant one. This means that wherever the dominant element doesn't provide the value or a particular attribute,
     * that value or attribute will be set from the recessive DOM node.

                for (PluginExecution element : tgt) {
                    Object key = getPluginExecutionKey().apply(element);
                    merged.put(key, element);
                }

                for (PluginExecution element : src) {
                    Object key = getPluginExecutionKey().apply(element);
                    PluginExecution existing = merged.get(key);

            <p>By default, every element content is trimmed, but starting with Maven 3.1.0, you can add
            {@code xml:space="preserve"} to elements you want to preserve whitespace.</p>
            <p>You can control how child POMs inherit configuration from parent POMs by adding {@code combine.children}
            or {@code combine.self} attributes to the children of the configuration element:</p>
            <ul>

    </default>
  </defaults>
  <classes>
    <class rootElement="true" xml.tagName="extension">
      <name>ExtensionDescriptor</name>
      <version>1.0.0</version>
      <description><![CDATA[Root element of the <code>extension.xml</code> file.]]></description>
      <fields>
        <field>
          <name>exportedPackages</name>
          <version>1.0.0</version>
          <association>
            <type>String</type>

import org.apache.maven.api.annotations.Nonnull;

/**
 * Information about the modules contained in a path element.
 * The path element may be a JAR file or a directory. Directories may use either package hierarchy
 * or module hierarchy, but not module source hierarchy. The latter is excluded because this class
 * is for path elements of compiled codes.
 */
class PathModularization {
    /**

        Map artifactMap = project.getArtifactMap();

        assertNotNull( artifactMap, "artifact-map should not be null." );
        assertEquals( 1, artifactMap.size(), "artifact-map should contain 1 element." );

        Artifact artifact = (Artifact) artifactMap.get( key );

        assertNotNull( artifact, "dependency artifact not found in map." );

        try (InputStream is = Files.newInputStream(pom)) {
            XMLStreamReader parser = new WstxInputFactory().createXMLStreamReader(is);
            if (parser.nextTag() == XMLStreamReader.START_ELEMENT
                    && parser.getLocalName().equals("project")) {
                for (int i = 0; i < parser.getAttributeCount(); i++) {
                    if ("root".equals(parser.getAttributeLocalName(i))) {

    </default>
  </defaults>
  <classes>
    <class rootElement="true" xml.tagName="remoteResourcesBundle">
      <name>RemoteResourcesBundle</name>
      <version>1.1.0</version>
      <description>Root element of the remote-resources.xml file.</description>
      <fields>
        <field>
          <name>remoteResources</name>
          <version>1.1.0</version>
          <description>

                for (Plugin element : src) {
                    Object key = getPluginKey().apply(element);
                    managedPlugins.put(key, element);
                }

                List<Plugin> newPlugins = new ArrayList<>();
                for (Plugin element : target.getPlugins()) {
                    Object key = getPluginKey().apply(element);

            }

            for (Repository element : dominant) {
                Object key = getRepositoryKey().apply(element);
                merged.put(key, element);
            }

            for (Repository element : recessive) {
                Object key = getRepositoryKey().apply(element);
                if (!merged.containsKey(key)) {
                    merged.put(key, element);
                }
            }