public Parser delegateSpecifier() {
        if (delegateSpecifierParser == null) {
           FutureParser future = scoped("delegateSpecifier");
           delegateSpecifierParser = future;
           future.setParser(
               sequence(
                   token("DELEGATE"),
                   delegateName(),
                   optional(
                       sequence(
                           token("AS"),
                           literal()
                       )
                   )
               )
           );
        }

        return delegateSpecifierParser;
    }