The command should be improved to prevent recursion and not follow up syncroots incorrectly.

Examples:

Get-Item C:\

NTFS Security Module

$object is returned via PSRemoting from another machine, SmbShare property is the result of Get-SmbShare

$object.SmbShare.ShareNtfsData.NTFSFolderAccess | where-object {$_.IdentityReference -eq 'DOMAIN\username'}