public function UserModel_BeforeDeleteUser_Handler($Sender) {
      $UserID = GetValue('UserID', $Sender->EventArguments);
      $Options = GetValue('Options', $Sender->EventArguments, array());
      $Options = is_array($Options) ? $Options : array();
      $Content =& $Sender->EventArguments['Content'];
      
      $this->DeleteUserData($UserID, $Options, $Content);
   }