UnElevation constructor Null safety

UnElevation()

1. unself_style
2. unself_style
3. UnElevation
4. UnElevation constructor

UnElevation class

1. Constructors
2. UnElevation
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Constants
12. elevations