code: protected function sortOutProtected($arrArchives)
  	{
  		if (empty($arrArchives) || !\is_array($arrArchives))
  		{
  			return $arrArchives;
  		}
  
  		$this->import(FrontendUser::class, 'User');
  		$objArchive = NewsArchiveModel::findMultipleByIds($arrArchives);
  		$arrArchives = array();
  
  		if ($objArchive !== null)
  		{
  			while ($objArchive->next())
  			{
  				if ($objArchive->protected)
  				{
  					if (!FE_USER_LOGGED_IN || !\is_array($this->User->groups))
  					{
  						continue;
  					}
  
  					$groups = StringUtil::deserialize($objArchive->groups);
  
  					if (empty($groups) || !\is_array($groups) || !\count(array_intersect($groups, $this->User->groups)))
  					{
  						continue;
  					}
  				}
  
  				$arrArchives[] = $objArchive->id;
  			}
  		}
  
  		return $arrArchives;
  	}
docs: Sort out protected archives
  
  @param array $arrArchives
  
  @return array