MidiPort class

1. Properties
2. connection
3. id
4. manufacturer
5. name
6. state
7. type
8. version
9. hashCode
10. on
11. runtimeType
12. Methods
13. close
14. open
15. addEventListener
16. dispatchEvent
17. noSuchMethod
18. removeEventListener
19. toString
20. Operators
21. operator ==