@Override
        public int getWidth() {
            return image.getWidth();
        }
Simple BatchRenderBackend.Image implementation that will transport the
dimensions of an image as well as the actual bytes from the loadImage()
to the addImageToTexture() method.

@author void
jme3-niftygui/src/main/java/com/jme3/niftygui/JmeBatchRenderBackend.java