public Parser anyLengthClause() {
        if (anyLengthClauseParser == null) {
           FutureParser future = scoped("anyLengthClause");
           anyLengthClauseParser = future;
           future.setParser(
               sequence(
                   token("ANY"),
                   token("LENGTH")
               )
           );
        }

        return anyLengthClauseParser;
    }