Replaces the destination file with the content of this file and then deletes the orignial file.  If a backupFile is specifed then the content of destination file is 
            backup to it.
            
 Declaration Syntax
 Declaration Syntax| C# | 
public S3FileInfo Replace( S3FileInfo destFile, S3FileInfo backupFile )
 Parameters
 Parameters- destFile (S3FileInfo)
- Where the contents of this file will be copy to.
- backupFile (S3FileInfo)
- If specified the destFile is backup to it.
 Return Value
 Return ValueS3FileInfo of the destination file.
 Exceptions
 Exceptions| Exception | Condition | 
|---|---|
| ArgumentException | |
| IOException | |
| WebException | |
| AmazonS3Exception |