Wincred.h in WinSDK

I was looking at the winsdk.modulemap and if I'm understanding things right, wincred.h is not available to be used in Swift?

Also potentially maybe I'm going down the wrong rabbit hole. I'm looking to prompt for authentication in a command line app and figured there was a standard Windows API available. Currently just calling powershell and prompting that way and parsing the return as the getpass C function isn't available in Windows.