1. Constructors
2. SearchRequest
3. fromJson
4. Properties
5. author
6. contents
7. copyWith
8. formats
9. hashCode
10. language
11. limit
12. query
13. runtimeType
14. sort
15. useAdvanced
16. Methods
17. noSuchMethod
18. toJson
19. toString
20. Operators
21. operator ==