package org.apidesign.javabeans.use.toomany;

 import org.apidesign.javabeans.toomany.*;

 import java.util.TooManyListenersException;

 import org.junit.After;

 import org.junit.Before;

 import org.junit.Test;

 import static org.junit.Assert.*;

 // BEGIN: javabeans.with.MyHighlightsContainer

 final class MyHighlightsContainer implements HighlightsContainer {

     private HighlightsChangeListener listener;

     public synchronized void addHighlightsChangeListener(

         HighlightsChangeListener l

     ) throws TooManyListenersException {

         if (listener != null) throw new TooManyListenersException();

         listener = l;

     }

     public synchronized void removeHighlightsChangeListener(

         HighlightsChangeListener l

     ) {

         if (listener == l) listener = null;

     }

     public HighlightsSequence getHighlights(int start, int end) {

         return null; // implement

     }

 }

 // END: javabeans.with.MyHighlightsContainer