}

    @Override
    public void setMaxHeapSize(String heapSize) {
        options.setMaxHeapSize(heapSize);
    }

    @Override
    public String getDefaultCharacterEncoding() {
        return options.getDefaultCharacterEncoding();
    }

    @Override
    public void setDefaultCharacterEncoding(String defaultCharacterEncoding) {
        options.setDefaultCharacterEncoding(defaultCharacterEncoding);

        getDelegate().systemProperty(name, value);
        return this;
    }

    @Nullable
    @Override
    default String getDefaultCharacterEncoding() {
        return getDelegate().getDefaultCharacterEncoding();
    }

    @Override
    default void setDefaultCharacterEncoding(@Nullable String defaultCharacterEncoding) {

     * @return The default character encoding. Returns null if the {@link java.nio.charset.Charset#defaultCharset() default character encoding of this JVM} should be used.
     */
    @Nullable @Optional @Input
     String getDefaultCharacterEncoding();

    /**
     * Sets the default character encoding to use.
     *

                public static void main(String[] args) {
                    System.out.println("default encoding: " + Charset.defaultCharset().name());
                }
            }
        """, executer.getDefaultCharacterEncoding()

        and:
        buildFile.write """
            apply plugin: "java"

            task echoDefaultEncoding(type: JavaExec) {
                classpath = project.layout.files(compileJava)