private List<KeyValueEntity> convertToEntity(List<Brand> list) { if (AppUtils.isBlank(list)) { return null; } List<KeyValueEntity> result = new ArrayList<KeyValueEntity>(list.size()); for (Brand brand : list) { KeyValueEntity entity = new KeyValueEntity(); entity.setKey(String.valueOf(brand.getBrandId())); entity.setValue(brand.getBrandName()); result.add(entity); } return result; }