code: public static function findMultipleByIds($arrIds, array $arrOptions=array())
  	{
  		if (empty($arrIds) || !\is_array($arrIds))
  		{
  			return null;
  		}
  
  		if (Validator::isUuid(current($arrIds)))
  		{
  			return static::findMultipleByUuids($arrIds, $arrOptions);
  		}
  
  		return parent::findMultipleByIds($arrIds, $arrOptions);
  	}
docs: Find multiple files by their IDs or UUIDs
  
  @param array $arrIds     An array of IDs or UUIDs
  @param array $arrOptions An optional options array
  
  @return Collection|FilesModel[]|FilesModel|null A collection of models or null if there are no files