1. Constructors
2. new
3. Properties
4. damping
5. hashCode
6. mass
7. runtimeType
8. stiffness
9. Methods
10. noSuchMethod
11. toSpringDescription
12. toString
13. Operators
14. operator ==
15. Constants
16. bouncy
17. gentle
18. ios
19. smooth
20. snappy
21. wobbly