public String orderClause(AmountRequest amountRequest) {
        return orderClause(amountRequest, ORDER_TERM_TO_SQL_STRING);
    }
@Test
    void mapCreatedAt() {
        final AmountRequest pageRequest = ascOnCreatedAt(2);
        assertThat(amountMapper.orderClause(pageRequest)).isEqualTo(" ORDER BY createdAt ASC");
    }