if (icon == null) { setAttribute(SELECTOR_CONTENT, CSSProperty.BACKGROUND_IMAGE, null); } else { setAttribute(SELECTOR_CONTENT, CSSProperty.BACKGROUND_IMAGE, "url(" + icon.getURL().toString() + ")"); }
setAttribute(SELECTOR_CONTENT, CSSProperty.BACKGROUND_IMAGE, icon);
    public void setBackgroundImage(SIcon icon) {        backgroundImage = icon;        if (icon == null) {            setAttribute(SELECTOR_CONTENT, CSSProperty.BACKGROUND_IMAGE, null);        } else {            setAttribute(SELECTOR_CONTENT, CSSProperty.BACKGROUND_IMAGE,                    "url(" + icon.getURL().toString() + ")");        }    }