public Parser justificationPhrase() {
        if (justificationPhraseParser == null) {
           FutureParser future = scoped("justificationPhrase");
           justificationPhraseParser = future;
           future.setParser(
               choice(
                   token("LEFT-JUSTIFY"),
                   token("RIGHT-JUSTIFY")
               )
           );
        }

        return justificationPhraseParser;
    }