dom = Xpp3Dom.mergeXpp3Dom(newDom, dom);
                            }
                        }
                    }
                    break;
                }
            }
        }

        if (dom != null) {
            // make a copy so the original in the POM doesn't get messed with
            dom = new Xpp3Dom(dom);
        }

        return dom;

    /**
     * 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.
     */

        }

        XmlNode dom = mojoExecution.getConfiguration() != null
                ? mojoExecution.getConfiguration().getDom()
                : null;

        PlexusConfiguration pomConfiguration;

        if (dom == null) {
            pomConfiguration = new DefaultPlexusConfiguration("configuration");
        } else {

                            null);
                    children.add(e);
                }
            }
        }

        XmlNodeImpl dom = new XmlNodeImpl("configuration", null, null, children, null);
        return new org.codehaus.plexus.util.xml.Xpp3Dom(dom);
    }

    // org.apache.maven.plugins:maven-remote-resources-plugin:1.0:process@executionId

          <type>String</type>
        </field>
        <field>
          <name>provides</name>
          <version>1.0.0/1.0.99</version> <!-- fake upperbound, it's inclusive -->
          <type>DOM</type> <!-- DOM for Maven 2.0.9/2.3.3 -->
          <description>
            Toolchain identification information, which will be matched against project requirements.

                    if (pluginDescriptorEntry != null) {
                        try (InputStream is = artifactJar.getInputStream(pluginDescriptorEntry)) {
                            // Note: using DOM instead of use of
                            // org.apache.maven.plugin.descriptor.PluginDescriptor
                            // as it would pull in dependency on:
                            // - maven-plugin-api (for model)

            }

            jtc.addProvideToken(key, matcher);
        }

        // populate the configuration section
        Xpp3Dom dom = (Xpp3Dom) model.getConfiguration();
        Xpp3Dom javahome = dom != null ? dom.getChild(JavaToolchainImpl.KEY_JAVAHOME) : null;
        if (javahome == null) {
            throw new MisconfiguredToolchainException(

            <multiplicity>*</multiplicity>
          </association>
        </field>
        <field>
          <name>configuration</name>
          <version>1.0.0</version>
          <type>DOM</type>
          <description>Configuration to pass to all goals run in this phase.</description>
        </field>
      </fields>
    </class>
    <class>
      <name>Execution</name>
      <version>1.0.0</version>

        }

        extensionDescriptor.setExportedPackages(parseStrings(dom.getChild("exportedPackages")));

        extensionDescriptor.setExportedArtifacts(parseStrings(dom.getChild("exportedArtifacts")));

        return extensionDescriptor;
    }

    private List<String> parseStrings(XmlNode dom) {
        List<String> strings = null;

        if (dom != null) {

        <field xml.transient="true">
          <name>pomFile</name>
          <version>4.1.0+</version>
          <required>false</required>
          <description>Originating POM file</description>
          <type>DOM</type> <!-- This is transformed to a File/Path in the template -->
        </field>

        <!-- ====================================================================== -->