/usr/share/php/Horde/Kolab/Server/Object/Attribute/ is in php-horde-kolab-server 2.0.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Base.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Createtimestamp.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Createtimestampdate.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Decorator.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Default.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Empty.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/External.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Field.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Firstnamelastname.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Guid.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Id.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Interface.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Internal.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Locked.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Modifytimestamp.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Modifytimestampdate.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Objectclass.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Openldapaci.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Required.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Single.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Value.php
/usr/share/php/Horde/Kolab/Server/Object/Attribute/Writelock.php