Bidi constructor Null safety

1. Flutter
2. intl
3. Bidi
4. Bidi constructor

Bidi class

1. Constructors
2. Bidi
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static methods
12. detectRtlDirectionality
13. endsWithLtr
14. endsWithRtl
15. enforceLtrInHtml
16. enforceLtrInText
17. enforceRtlInHtml
18. enforceRtlInText
19. estimateDirectionOfText
20. guardBracketInHtml
21. guardBracketInText
22. hasAnyLtr
23. hasAnyRtl
24. isRtlLanguage
25. normalizeHebrewQuote
26. startsWithLtr
27. startsWithRtl
28. stripHtmlIfNeeded
29. Constants
30. LRE
31. LRM
32. PDF
33. RLE
34. RLM