@Override
    public void read(JmeImporter im) throws IOException {
        super.read(im);
        InputCapsule ic = im.getCapsule(this);
        content = ic.readByteArray("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