public void addWord(String word, IToken token) {
public synchronized void addWord(String word, IToken token) {
		public void addWord(String word, IToken token) {			Assert.isNotNull(word);			Assert.isNotNull(token);							super.addWord(word, token);			fUppercaseWords.put(new CombinedWordRule.CharacterBuffer(word.toUpperCase()), token);		}