public void clear() {
   fGrammarPool.clear();
 }
 public void unlockPool() {
   fGrammarPool.unlockPool();
 }
 public void lockPool() {
   fGrammarPool.lockPool();
 }
 public Grammar retrieveGrammar(XMLGrammarDescription desc) {
   return fGrammarPool.retrieveGrammar(desc);
 }
 public void cacheGrammars(String grammarType, Grammar[] grammars) {
   fGrammarPool.cacheGrammars(grammarType, grammars);
 }
 public Grammar[] retrieveInitialGrammarSet(String grammarType) {
   return fGrammarPool.retrieveInitialGrammarSet(grammarType);
 }