import java.util.Collection;


/**
 * An interface for representing nodes in a state space.
 * 
 * @author Sjaak Smetsers
 * @version 1.2
 * @date 28-02-2015
 */
public interface Configuration extends Comparable<Configuration> {
    /*
     * To obtain the successors for a specific configuration
     * @return a collection of configurations containing the successors
     */
	public Collection<Configuration> successors ();
    /*
     * For marking final / solution configurations.
     */
	public boolean isSolution ();
}