public void setLayerManager(String layerName, Object manager) {
        AnimLayer layer = getLayer(layerName);
        layer.setManager(manager);
    }
Assign a manager to the named layer.

@param layerName the name of the layer to modify
@param manager the desired manager (typically an AnimEvent) or null for
none
jme3-core/src/main/java/com/jme3/anim/AnimComposer.java