@Override
    public void read(JmeImporter im) throws IOException {
        InputCapsule in = im.getCapsule(this);
        array = in.readFloatArray("array", null);
        index = in.readIntArray("index", null);
    }
creates a compact vector array
@param dataArray the data array
@param index the indices
jme3-core/src/main/java/com/jme3/animation/CompactFloatArray.java