1. 构造函数
  2. fromFile
  3. fromRawDatagramSocket
  4. fromRawSocket
  5. fromReadPipe
  6. fromSocket
  7. fromStdin
  8. fromStdout
  9. fromWritePipe
  10. 属性
  11. hashCode
  12. runtimeType
  13. 方法
  14. noSuchMethod
  15. toFile
  16. toRawDatagramSocket
  17. toRawSocket
  18. toReadPipe
  19. toSocket
  20. toString
  21. toWritePipe
  22. 运算符
  23. operator ==