Why dependency property is static readonly in WPF?

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Tags

1. #class
2. #definition
3. #system
4. #public
5. #results
6. #consistent
7. #property
8. #attached
9. #static
10. #there
11. #field
12. #change
13. #register
14. #needs
15. #owner
16. #because
17. #comes
18. #readonly
19. #quote
20. #should