FSClient.Account.KillGateway C# (CSharp) Method

        private void KillGateway()
        {
            if (!String.IsNullOrEmpty(old_gateway_id))
                Utils.api_exec("sofia", "profile softphone killgw " + old_gateway_id);
        }

 public static void RemoveAccount(Account account)
 {
     account.KillGateway();
     account.is_default_account = false;
     accounts.Remove(account);
     ReloadSofia();
 }