如何在 java 8 表达式 foreach 中执行此操作

Question

我如何在 java8 表达式 forEach 中做到这一点？ 谢谢你

BigDecimal amount = BigDecimal.ZERO;
        for (FamilyTypesEnum asset : FAMILY_TYPES_ENUMS) {
            for (DividendReceipt dividend : callTXY750(equityAccountId, asset, from, to)) {
                if (DIVISA_DEFECTO.equalsIgnoreCase(dividend.getLiquidAmount().getCurrency())) {
                    amount = amount.add(dividend.getLiquidAmount().getAmount());
                } else {
                    amount = amount.add(contravalorService
                            .contravalorarImporte(dividend.getLiquidAmount().getCurrency(), DIVISA_DEFECTO,
                                    dividend.getLiquidAmount().getAmount()));
                }
            }
        }
```