1. Constructors
2. new
3. fromJSON
4. Properties
5. composing
6. hashCode
7. isComposingRangeValid
8. runtimeType
9. selection
10. text
11. Methods
12. copyWith
13. noSuchMethod
14. replaced
15. toJSON
16. toString
17. Operators
18. operator ==
19. Constants
20. empty