问MimeKit等待不使用字符串vars的client.AuthenticateAsync(用户名、密码)

EN

 using var client = new MailKit.Net.Smtp.SmtpClient {                   
                CheckCertificateRevocation = false,
                ServerCertificateValidationCallback = (s, c, h, e) => true,
            };
            
                ...
                try
                {

                    client.AuthenticationMechanisms.Remove("XOAUTH2");
                    await client.ConnectAsync(_smtpDetails.Server, _smtpDetails.Port, SecureSocketOptions.SslOnConnect, default);

                    await client.AuthenticateAsync("email@example.com", "mypwd"); This works but i need to authenticate using  await client.AuthenticateAsync(string.Username, string.Pwd)!!

                    await client.SendAsync(mimeMessage);
                }
                finally
                {
                    await client.DisconnectAsync(true);
                }
             }