ITextAnalyzer constructor Null safety

1. text_analysis
2. text_analysis
3. ITextAnalyzer
4. ITextAnalyzer constructor

ITextAnalyzer class

1. Constructors
2. ITextAnalyzer
3. Properties
4. configuration
5. hashCode
6. runtimeType
7. tokenFilter
8. Methods
9. noSuchMethod
10. tokenize
11. tokenizeJson
12. toString
13. Operators
14. operator ==