xstream/src/java/com/thoughtworks/xstream/io/xml/JDom2Writer.java [74:101]:
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        this(new DefaultJDOMFactory());
    }

    @Override
    protected Element createNode(final String name) {
        final Element element = documentFactory.element(encodeNode(name));
        final Element parent = top();
        if (parent != null) {
            parent.addContent(element);
        }
        return element;
    }

    @Override
    public void setValue(final String text) {
        top().addContent(documentFactory.text(text));
    }

    @Override
    public void addAttribute(final String key, final String value) {
        top().setAttribute(documentFactory.attribute(encodeAttribute(key), value));
    }

    /**
     * @since 1.4.5
     */
    private Element top() {
        return getCurrent();
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xstream/src/java/com/thoughtworks/xstream/io/xml/JDomWriter.java [90:114]:
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        this(new DefaultJDOMFactory());
    }

    @Override
    protected Element createNode(final String name) {
        final Element element = documentFactory.element(encodeNode(name));
        final Element parent = top();
        if (parent != null) {
            parent.addContent(element);
        }
        return element;
    }

    @Override
    public void setValue(final String text) {
        top().addContent(documentFactory.text(text));
    }

    @Override
    public void addAttribute(final String key, final String value) {
        top().setAttribute(documentFactory.attribute(encodeAttribute(key), value));
    }

    private Element top() {
        return getCurrent();
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