@Override
    protected GeometryList getOccludersToRender(int shadowMapIndex, GeometryList shadowMapOccluders) {
        for (Spatial scene : viewPort.getScenes()) {
            ShadowUtil.getGeometriesInCamFrustum(scene, shadowCams[shadowMapIndex], RenderQueue.ShadowMode.Cast, shadowMapOccluders);
        }
        return shadowMapOccluders;
    }
Creates a PointLightShadowRenderer

@param assetManager the application asset manager
@param shadowMapSize the size of the rendered shadowmaps (512,1024,2048,
etc...)
jme3-core/src/main/java/com/jme3/shadow/PointLightShadowRenderer.java