return delegate.getTargetCompatibility();
    }

    @Override
    public void setTargetCompatibility(Object value) {
        logDeprecation();
        delegate.setTargetCompatibility(value);
    }

    @Override
    public void setTargetCompatibility(JavaVersion value) {
        logDeprecation();
        delegate.setTargetCompatibility(value);
    }

    @Override
    public Manifest manifest() {

        return extension.getTargetCompatibility();
    }

    @Override
    public void setTargetCompatibility(Object value) {
        extension.setTargetCompatibility(value);
    }

    @Override
    public void setTargetCompatibility(JavaVersion value) {
        extension.setTargetCompatibility(value);
    }

    @Override
    public Manifest manifest() {
        return extension.manifest();

    }

    /**
     * Sets target compatibility.
     *
     * @since 4.0
     */
    public void setTargetCompatibility(JavaVersion targetCompatibility) {
        setTargetCompatibility((Object) targetCompatibility);
    }

    public void setTargetCompatibility(Object targetCompatibility) {
        JavaVersion version = JavaVersion.toVersion(targetCompatibility);
        if (version != null) {

     */
    public abstract void setTargetCompatibility(Object value);

    /**
     * Sets the target compatibility used for compiling Java sources.
     *
     * @param value The value for the target compatibility
     */
    public abstract void setTargetCompatibility(JavaVersion value);

    /**
     * Creates a new instance of a {@link Manifest}.
     */

    public JavaVersion getRawTargetCompatibility() {
        return targetCompat;
    }

    @Override
    public void setTargetCompatibility(Object value) {
        setTargetCompatibility(JavaVersion.toVersion(value));
    }

    @Override
    public void setTargetCompatibility(JavaVersion value) {
        targetCompat = value;
    }

    @Override
    public Manifest manifest() {

        this.sourceCompatibility = sourceCompatibility;
    }

    /**
     * Sets the target compatibility for the compiler.
     */
    public void setTargetCompatibility(JavaVersion targetCompatibility) {
        this.targetCompatibility = targetCompatibility;
    }

    @Override
    protected String getDefaultResourceName() {
        return "defaultJdtPrefs.properties";

    @Nullable
    String getSourceCompatibility();

    void setSourceCompatibility(@Nullable String sourceCompatibility);

    @Nullable
    String getTargetCompatibility();

    void setTargetCompatibility(@Nullable String targetCompatibility);

    List<File> getSourceRoots();

    void setSourcesRoots(List<File> sourcesRoots);

    }

    @Override
    @Nullable
    public String getTargetCompatibility() {
        return targetCompatibility;
    }

    @Override
    public void setTargetCompatibility(@Nullable String targetCompatibility) {
        this.targetCompatibility = targetCompatibility;
    }

    @Override
    public List<File> getSourceRoots() {
        return sourceRoots;
    }

     *
     * @param value The value for the target compatibility
     *
     * @see #toolchain(Action)
     */
    void setTargetCompatibility(JavaVersion value);

    /**
     * Registers a feature.
     * <p>
     * The new feature will have a default capability corresponding to the

        EclipseJdt jdtModel = getJdt();
        jdtModel.getFile().getBeforeMerged().execute(jdtContent);
        jdtContent.setSourceCompatibility(jdtModel.getSourceCompatibility());
        jdtContent.setTargetCompatibility(jdtModel.getTargetCompatibility());
        jdtModel.getFile().getWhenMerged().execute(jdtContent);
    }

    @Override
    protected PropertiesTransformer getTransformer() {
        if (jdt == null) {