public interface SortedListInterface<B extends Comparable<B>> {
   /**
     * Add an element to the sorted array list
     * @param obToAdd -- the thing to be added
     * @return 
     */
   public boolean add(B obToAdd);
 
   /**
   * Remove the first (or only) occurrence of the specified item
   * from the sorted list. Comparisons are done using 
   * compareTo(x)==0 rather than == or equals. Note that 
   * because comparison are done using compareTo, it may be the
   * case that that the returned object is NOT == to the provided
   * object.
   * @param b the item to be removed
   * @return the removed item
   */
   public B remove(B b);

   /**
   * Get the position of the an item in the sorted list.  This is
   * is the first item found.  Comparisons are done using 
   * compareTo(x)==0 rather than == or equals.
   * @param b the item whose position is to be found
   * @return the position or -1 if could not be found.
   */
   public int getPosition(B b);
}