PointProvider constructor Null safety

1. Flutter
2. point_provider
3. PointProvider
4. PointProvider constructor

PointProvider class

1. Constructors
2. PointProvider
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. distance
8. fromInt
9. noSuchMethod
10. toInt
11. toString
12. Operators
13. operator ==