public Parser execDLIStatement() {
        if (execDLIStatementParser == null) {
           FutureParser future = scoped("execDLIStatement");
           execDLIStatementParser = future;
           future.setParser(
               sequence(
                   choice(
                       token("EXEC"),
                       token("EXECUTE")
                   ),
                   token("DLI"),
                   optional(
                       skipto(
                           token("END-EXEC")
                       )
                   ),
                   token("END-EXEC")
               )
           );
        }

        return execDLIStatementParser;
    }