1. 属性
2. addressLine
3. city
4. country
5. dependentLocality
6. hashCode
7. languageCode
8. organization
9. phone
10. postalCode
11. recipient
12. region
13. runtimeType
14. sortingCode
15. 方法
16. noSuchMethod
17. toString
18. 运算符
19. 运算符 ==