RouterDelegate<T> constructor Null safety

1. Flutter
2. widgets
3. RouterDelegate<T>
4. RouterDelegate constructor

RouterDelegate class

1. Constructors
2. RouterDelegate
3. Properties
4. currentConfiguration
5. hashCode
6. runtimeType
7. Methods
8. addListener
9. build
10. noSuchMethod
11. popRoute
12. removeListener
13. setInitialRoutePath
14. setNewRoutePath
15. setRestoredRoutePath
16. toString
17. Operators
18. operator ==