1. Dart
2. dart:html
3. Plugin
4. namedItem method

Plugin class

1. Properties
2. description
3. filename
4. hashCode
5. length
6. name
7. runtimeType
8. Methods
9. item
10. namedItem
11. noSuchMethod
12. toString
13. Operators
14. operator ==

MimeType? namedItem(String name) native;