/** Overridden to return <code>null</code>. */    public Object[] getSelectedObjects() {        return null;    }     /**     * {@inheritDoc}     */    public void setGroup(ButtonGroup group) {        this.group = group;    }     /**     * Returns the group that the button belongs to.     * Normally used with radio buttons, which are mutually     * exclusive within their group.     *     * @return the <code>ButtonGroup</code> that the button belongs to     *     * @since 1.3     */    public ButtonGroup getGroup() {        return group;    }     boolean isMenuItem() {        return menuItem;    }     void setMenuItem(boolean menuItem) {        this.menuItem = menuItem;    }}

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