/** * Returns whether this placemark must retrieve its model resource. This always returns <code> * false</code> if this placemark has no <code>KMLLink</code>. * * @return <code>true</code> if this placemark must retrieve its model resource, otherwise <code> * false</code>. */ protected boolean mustRetrieveResource() { KMLLink link = this.model.getLink(); if (link == null) return false; // The resource must be retrieved if the link has been updated since the resource was // last retrieved, or if the resource has never been retrieved. return this.getColladaRoot() == null || link.getUpdateTime() > this.resourceRetrievalTime.get(); }