@Nonnull
    String getExecutionId();

    @Nonnull
    String getGoal();

    @Nonnull
    String getLifecyclePhase();

    @Nonnull
    Optional<XmlNode> getConfiguration();

            }

            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(

n; private java.net.URI readDistroUrl() throws java.net.URISyntaxException; private static void loadProperties(java.io.File, java.util.Properties) throws java.io.IOException; public java.net.URI getDistribution(); public WrapperConfiguration getConfiguration(); public void execute(String[], Installer, BootstrapMainStarter) throws Exception; private String getProperty(String); private String getProperty(String, String); private String reportMissingPropert(String); } org/apache/maven/wrapper/cli/A...

        Xpp3Dom configuration1 = new Xpp3Dom("configuration");
        Xpp3Dom jdkHome1 = new Xpp3Dom("jdkHome");
        jdkHome1.setValue("${env.JAVA_HOME}");
        configuration1.addChild(jdkHome1);
        tm1.setConfiguration(configuration1);

        ToolchainModel tm2 = new ToolchainModel();
        tm1.setType("jdk");
        tm1.addProvide("version", "1.4");
        tm1.addProvide("vendor", "sun");