this.plugin = plugin;
    }

    @Override
    public void configure(Binder binder) {
        if (plugin.getKey() != null) {
            XmlNode configuration = plugin.getConfiguration();
            if (configuration == null) {
                configuration = new XmlNodeImpl("configuration");
            }
            binder.bind(XmlNode.class)

    @Nonnull
    String getExecutionId();

    @Nonnull
    String getGoal();

    @Nonnull
    String getLifecyclePhase();

    @Nonnull
    Optional<XmlNode> getConfiguration();

        } 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) {

        return mojoDescriptor;
    }

    public org.codehaus.plexus.util.xml.Xpp3Dom getConfiguration() {
        return configuration;
    }

    public void setConfiguration(org.codehaus.plexus.util.xml.Xpp3Dom configuration) {
        this.configuration = configuration;
    }

    public void setConfiguration(XmlNode configuration) {

     * {@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) {

            }

            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(

        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<>();

                plugin.setVersion(extension.getVersion());
                XmlNode configuration = extension.getDelegate().getConfiguration();
                if (configuration != null) {
                    plugin.setConfiguration(new Xpp3Dom(configuration));
                }
                extensionPlugins.add(plugin);
            }

            for (Plugin plugin : build.getPlugins()) {

            spec.getClasspath().from(calculateWorkerClasspath());
            spec.getForkOptions().setMaxHeapSize("1g");
        });
        queue.submit(JApiCmpWorkAction.class, params -> params.getConfiguration().set(calculateWorkerConfiguration(baseline, current)));
    }

    @Inject
    protected abstract WorkerExecutor getWorkerExecutor();

    private Set<File> calculateWorkerClasspath() {

     * configuration expansion (merging configuration defined globally for a given plugin
     * using {@link org.apache.maven.api.model.Plugin#getConfiguration()}
     * into the configuration for each {@link org.apache.maven.api.model.PluginExecution}.
     */
    boolean isProcessPlugins();

    /**