@Override
    public void read(JmeImporter im) throws IOException {
        super.read(im);
        InputCapsule ic = im.getCapsule(this);
        lambda = ic.readFloat("lambda", 0.65f);
        zFarOverride = ic.readFloat("zFarOverride", 0);
        light = (DirectionalLight) ic.readSavable("light", null);
        fadeInfo = (Vector2f) ic.readSavable("fadeInfo", null);
        fadeLength = ic.readFloat("fadeLength", 0f);
        init(nbShadowMaps, (int) shadowMapSize);
    }
Enables the stabilization of the shadow's edges. (default is true)
This prevents shadow edges from flickering when the camera moves.
However, it can lead to some loss of shadow quality in particular scenes.

@param stabilize true to stabilize, false to disable stabilization
jme3-core/src/main/java/com/jme3/shadow/DirectionalLightShadowRenderer.java