package dragon.ml.seqmodel.model;/** * <p>Interface of Edge Iterator</p> * <p></p> * <p>Copyright: Copyright (c) 2005</p> * <p>Company: IST, Drexel University</p> * @author Davis Zhou * @version 1.0 */public interface EdgeIterator {    /**     * Starts scaning all edges in the graph     */    public void start();    /**     * Tests if the next edge exists     * @return true if the next edge exists     */    public boolean hasNext();    /**     * Gets the next edge     * @return the next edge     */    public Edge next();    /**     * @return true if the next edge is from the outer model     */    public boolean nextIsOuter();};