public AddressPortable adminArea4(String adminArea4) {
        this.adminArea4 = adminArea4;
        return this;
    }
The neighborhood, ward, or district. Smaller than `admin_area_level_3` or `sub_locality`. Value is:<ul><li>The postal sorting code for Guernsey and many French territories, such as French Guiana.</li><li>The fine-grained administrative levels in China.</li></ul>
pay-java-paypal/src/main/java/com/egzosn/pay/paypal/v2/bean/order/AddressPortable.java