public Parser procedureDivision() {
        if (procedureDivisionParser == null) {
           FutureParser future = scoped("procedureDivision");
           procedureDivisionParser = future;
           future.setParser(
               sequence(
                   token("PROCEDURE"),
                   token("DIVISION"),
                   optional(
                       mnemonicName()
                   ),
                   optional(
                       usingOrChainingPhrase()
                   ),
                   optional(
                       returningProcedurePhrase()
                   ),
                   token("."),
                   optional(
                       declaratives()
                   ),
                   star(
                       sentence()
                   ),
                   star(
                       paragraph()
                   ),
                   star(
                       section()
                   )
               )
           );
        }

        return procedureDivisionParser;
    }