@Override
    public void write(JmeExporter ex) throws IOException {
        super.write(ex);
        OutputCapsule oc = ex.getCapsule(this);
        oc.write(content, "content", new byte[0]);
    }
Used to load textures from image binary content.
<p>Filename is required to acquire proper type asset loader according to extension.</p>
jme3-plugins/src/fbx/java/com/jme3/scene/plugins/fbx/ContentTextureKey.java