public Raster getTile(int tileX, int tileY) {
        if (tileX != 0 || tileY != 0) {
            throw new IllegalArgumentException(PropertyUtil.getString("SingleTileRenderedImage0"));
        }
        return ras;
    }
Returns the image's Raster as tile (0, 0).
plugins/svg-plugin/batik-codec-fix/src/main/java/org/apache/batik/ext/awt/image/codec/util/SingleTileRenderedImage.java