class MapViewport {

    public boolean isEditable() {
        return editable.get();
    }

    public  MapViewport();
    public  MapViewport(boolean matchAspectRatio);
    public  MapViewport(ReferencedEnvelope bounds);
    public  MapViewport(ReferencedEnvelope bounds, boolean matchAspectRatio);
    public  MapViewport(MapViewport sourceViewport);

}