SMHPutRequest<T> constructor Null safety

1. smh_flutter_sdk
2. smh_user_requests
3. SMHPutRequest<T>
4. SMHPutRequest constructor

SMHPutRequest class

1. Constructors
2. SMHPutRequest
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. method
8. noSuchMethod
9. path
10. request
11. serviceKey
12. toString
13. URLMethod
14. Operators
15. operator ==