_cachedRects.put(key, style._border);
putCachedRect(key, style._border);
    private static BorderPropertySet getBorderProperty(CalculatedStyle style,                                                       CssContext ctx) {        if (style._border == null) {            String key = BorderPropertySet.deriveKey(style);            style._border = (BorderPropertySet) _cachedRects.get(key);            if (style._border == null) {                style._border = BorderPropertySet.newInstance(style, ctx);                _cachedRects.put(key, style._border);            }        }        return style._border;    }