code: public static function findById($intId, array $arrOptions=array())
  	{
  		if (Validator::isUuid($intId))
  		{
  			return static::findByUuid($intId, $arrOptions);
  		}
  
  		return static::findOneBy('id', $intId, $arrOptions);
  	}
docs: Find a file by its ID or UUID
  
  @param mixed $intId      The ID or UUID
  @param array $arrOptions An optional options array
  
  @return FilesModel|null The model or null if there is no file