public LinkListener(LinkManager linkManager, LinkLayer layer, OMGridGenerator generator) {  this.linkManager = linkManager; this.layer = layer; this.currentGenerator = generator; }
private LinkListener() {}
    public LinkListener(LinkManager linkManager,                        LinkLayer layer, OMGridGenerator generator) {        this.linkManager = linkManager;        this.layer = layer;        this.currentGenerator = generator;    }