AbstractNode class

1. Constructors
2. AbstractNode
3. Properties
4. attached
5. depth
6. owner
7. parent
8. hashCode
9. runtimeType
10. Methods
11. adoptChild
12. attach
13. detach
14. dropChild
15. redepthChild
16. redepthChildren
17. noSuchMethod
18. toString
19. Operators
20. operator ==