1. 属性
2. hashCode
3. path
4. runtimeType
5. 方法
6. close
7. closeSync
8. flush
9. flushSync
10. length
11. lengthSync
12. lock
13. lockSync
14. noSuchMethod
15. position
16. positionSync
17. read
18. readByte
19. readByteSync
20. readInto
21. readIntoSync
22. readSync
23. setPosition
24. setPositionSync
25. toString
26. truncate
27. truncateSync
28. unlock
29. unlockSync
30. writeByte
31. writeByteSync
32. writeFrom
33. writeFromSync
34. writeString
35. writeStringSync
36. 运算符
37. operator ==