/**
 * Classes implementing this interface represent an Immutable Position.
 */
interface ImmutablePosition {

    /**
     * Return the x value associated with this object.
     * @return the x value associated with this object.
     */
    int getX();

    /**
     * Return the y value associated with this object.
     * @return the y value associated with this object.
     */
    int getY();

}