* {@link javax.inject.Named} annotation.
     */
    public String getKey() {
        return key;
    }

    /**
     * Returns the configuration for this extension.
     */
    public XmlNode getConfiguration() {
        return configuration;
    }

    private static final ExtensionDescriptorBuilder BUILDER = new ExtensionDescriptorBuilder();

    public static CoreExtensionEntry discoverFrom(ClassRealm loader) {

            authBuilder.addPrivateKey(server.getPrivateKey(), server.getPassphrase());
            authSelector.add(server.getId(), authBuilder.build());

            if (server.getConfiguration() != null) {
                XmlNode dom = server.getDelegate().getConfiguration();
                List<XmlNode> children = dom.children().stream()
                        .filter(c -> !"wagonProvider".equals(c.name()))

        } catch (Exception e) {
            throw new PluginContainerException(mojoDescriptor, pluginRealm, "Unable to lookup Mojo", e);
        }

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

        PlexusConfiguration pomConfiguration;

        if (dom == null) {

        logger.debug(
                "Style:         " + (mojoExecution.getMojoDescriptor().isAggregator() ? "Aggregating" : "Regular"));
        logger.debug("Configuration: " + mojoExecution.getConfiguration());
    }

    private void debugDependencyRequirements(List<MojoExecution> mojoExecutions) {
        Set<String> scopesToCollect = new TreeSet<>();
        Set<String> scopesToResolve = new TreeSet<>();

        Objects.requireNonNull(request, "request cannot be null");
        Objects.requireNonNull(request.getBean(), "request.bean cannot be null");

        Object configuration = request.getConfiguration();
        if (configuration == null) {
            return;
        }

        PlexusConfiguration plexusConfig;
        if (configuration instanceof PlexusConfiguration plexusConfiguration) {

                        .priority(i - mojos.size())
                        .phase(phase)
                        .goals(List.of(goal))
                        .configuration(mojo.getConfiguration())
                        .location("", location)
                        .location("id", location)
                        .location("phase", location)
                        .location("goals", location)

        if (sourceDominant) {
            merged.putAll(target.getConfiguration());
            merged.putAll(source.getConfiguration());
        } else {
            merged.putAll(source.getConfiguration());
            merged.putAll(target.getConfiguration());
        }
        target.setConfiguration(merged);
    }

    protected void mergeNotifier_SendOnError(

                        .get("key"));
        org.codehaus.plexus.util.xml.Xpp3Dom toolchainConfiguration = (org.codehaus.plexus.util.xml.Xpp3Dom)
                result.getEffectiveToolchains().getToolchains().get(0).getConfiguration();
        assertEquals(
                interpolatedValue, toolchainConfiguration.getChild("jdkHome").getValue());
        assertNotNull(result.getProblems());
        assertEquals(0, result.getProblems().size());

                realm,
                Collections.singleton(artifacts.get(0).getFile()),
                extension.getGroupId() + ":" + extension.getArtifactId(),
                extension.getConfiguration());
    }

    private List<Artifact> resolveExtension(
            CoreExtension extension,
            RepositorySystemSession repoSession,
            List<RemoteRepository> repositories,

        MojoDescriptor mojoDescriptor = mojoExecution.getMojoDescriptor();

        XmlNode executionConfiguration = mojoExecution.getConfiguration() != null
                ? mojoExecution.getConfiguration().getDom()
                : null;
        if (executionConfiguration == null) {
            executionConfiguration = XmlNode.newInstance("configuration");
        }