public function MailCreateUserAccount(CbgrnMailUserAccountType $mail_user_account)
 {
     // $mail_user_account : CbgrnMailUserAccountType class (only one)
     $this->CheckAndSetHeader(__FUNCTION__);
     $reg_args["mail_user_accounts"] = $mail_user_account->getObjectVars();
     $this->encodeString($reg_args);
     $results = parent::MailCreateUserAccount($reg_args);
     $this->methodClose();
     return $this->decodeString($results->user_accounts);
 }