final public int delay_mechanism() throws ParseException {
    switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
    case TRANSPORT:
      jj_consume_token(TRANSPORT);
      break;
    case INERTIAL:
    case REJECT:
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case REJECT:
        jj_consume_token(REJECT);
        expression();
        break;
      default:
        jj_la1[73] = jj_gen;
        ;
      }
      jj_consume_token(INERTIAL);
      break;
    default:
      jj_la1[74] = jj_gen;
      jj_consume_token(-1);
      throw new ParseException();
    }
          {if (true) return 0;}
    throw new Error("Missing return statement in function");
  }