public void setScene(Node scene) {
        this.scene = scene;
        if (!cameras.isEmpty()) {
            for (CameraNode n : cameras.values()) {
                this.scene.attachChild(n);
            }
        }
    }
sets the scene to use for this cinematic it is expected that the scene is
added before adding events to the cinematic

@param scene the scene where the cinematic should take place.
jme3-core/src/main/java/com/jme3/cinematic/Cinematic.java