FileSystemObject, can ADODB. Stream manipulate files in UTF-8 format?

Scripting. FileSystemObject:
FileSystemObject. createtextfile (filename [, overwrite [, Unicode])

The Unicode attribute is as follows:
Optional. Boolean indicates whether to create a file in Unicode or ASCII format. If a file is created in unicode format, the value is true;
If a file is created in ASCII format, the value is false. If this part is omitted, an ASCII file is created.

We cannot use this function to create UTF-8 format files.
At this time, we can use the ADODB. Stream object. The usage is as follows:
Set objstream = server. Createobject ("ADODB. Stream ")
With objstream
. Open
. Charset = "UTF-8"
. Position = objstream. Size
. Writetext = Str
. Savetofile server. mappath ("/sitemap. xml"), 2
. Close
End
Set objstream = nothing