takeRecords method Null safety

List<MutationRecord> takeRecords() native;

1. Dart
2. dart:html
3. MutationObserver
4. takeRecords method

MutationObserver class

1. Constructors
2. MutationObserver
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. disconnect
8. noSuchMethod
9. observe
10. takeRecords
11. toString
12. Operators
13. operator ==
14. Static properties
15. supported