@Override
  public Single<List<Questions>> getQuestions() {
    final String _sql = "SELECT * FROM questions_table";
    final RoomSQLiteQuery _statement = RoomSQLiteQuery.acquire(_sql, 0);
    return Single.fromCallable(new Callable<List<Questions>>() {...}
}

  @Override
  public Flowable<List<Integer>> getCountAnswers(final int quizId, final boolean isAddQuest) {
    final String _sql = "SELECT count(id) FROM main_quiz_table WHERE quiz_id = ? AND add_question = ? AND user_ans_id > 0";
    final RoomSQLiteQuery _statement = RoomSQLiteQuery.acquire(_sql, 2);
    int _argIndex = 1;
    _statement.bindLong(_argIndex, quizId);
    _argIndex = 2;
    final int _tmp;
    _tmp = isAddQuest ? 1 : 0;
    _statement.bindLong(_argIndex, _tmp);
    return RxRoom.createFlowable(__db, new String[]{"main_quiz_table"}, new Callable<List<Integer>>() {...}
}

@Override
  public Single<List<Questions>> getQuestions() {final String _sql = "SELECT * FROM questions_table";
    final RoomSQLiteQuery _statement = RoomSQLiteQuery.acquire(_sql, 0);
    return RxRoom.createSingle(new Callable<List<Questions>>() {...}
}

   @Override
  public Flowable<List<Integer>> getCountAnswers(final int quizId, final boolean isAddQuest) {
    final String _sql = "SELECT count(id) FROM main_quiz_table WHERE quiz_id = :quizId AND add_question = :isAddQuest AND user_ans_id > 0";
    final RoomSQLiteQuery _statement = RoomSQLiteQuery.acquire(_sql, 2);
    int _argIndex = 1;
    _statement.bindLong(_argIndex, quizId);
    _argIndex = 2;
    final int _tmp;
    _tmp = isAddQuest ? 1 : 0;
    _statement.bindLong(_argIndex, _tmp);
    return RxRoom.createFlowable(__db, false, new String[]{"main_quiz_table"}, new Callable<List<Integer>>() {...}
}