/*******************************************************************************
 * Copyright (c) 2011 IRIS/DMC.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v2.1
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     IRIS/DMC- initial API and implementation
 * 
 * ACKNOWLEDGEMENT
 * This software was developed as part of a project supported by 
 *  Cooperative Agreement Number G10AC00533 from the United States 
 *  Geological Survey.  Its contents are solely the responsibility of 
 * the authors and the USGS is not responsible for the efficacy,
 * safety, or suitability of this software.
 ******************************************************************************/
public interface Node {

}