?????? SPF-VSS Writer ??д????е????
????SPF-VSS ??д????????1????
????1.???? SharePoint  ?????
???????? SharePoint ????????????????????????б??
????????????????б???????

????2.??????????????????
??????? VSS ???? SharePoint??????????/??????????

????3.??????????????????
??????? VSS ???? SharePoint??????????/??????????
??????? postRestore() ??????????