Gets and sets the property QRCodePNG. 
            
            A QR code PNG image that encodes otpauth://totp/$virtualMFADeviceName@$AccountName?                secret=$Base32String
            where $virtualMFADeviceName is one of the create call arguments,            AccountName is
            the user name if set (accountId otherwise), and Base32String is the seed in            Base32
            format. The  CopyC# is Base64-encoded.
CopyC# is Base64-encoded.
            Base32String
 Declaration Syntax
 Declaration Syntax| C# | 
public MemoryStream QRCodePNG { get; set; }