public boolean tryDeltaWord(String string){
            int lastHash=hash;
            int lastState=state;
            tryDelta((byte)' ');
            delta(string);
            if (isValid() && peekDelta((byte)' ')) return true;
            if (isFinal()) return true;

            hash=lastHash;
            state=lastState;
            return false;
        }
Tries to jump ahead by one word. If the given string is not the next complete valid word, nothing is done.
fsa/src/main/java/com/yahoo/fsa/FSA.java