/usr/share/php/ProxyManager/ProxyGenerator/Hydrator/ is in php-proxy-manager 0.3.6-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/ProxyManager/ProxyGenerator/Hydrator/MethodGenerator/
/usr/share/php/ProxyManager/ProxyGenerator/Hydrator/MethodGenerator/Constructor.php
/usr/share/php/ProxyManager/ProxyGenerator/Hydrator/MethodGenerator/DisabledMethod.php
/usr/share/php/ProxyManager/ProxyGenerator/Hydrator/MethodGenerator/Extract.php
/usr/share/php/ProxyManager/ProxyGenerator/Hydrator/MethodGenerator/GetAccessorProperties.php
/usr/share/php/ProxyManager/ProxyGenerator/Hydrator/MethodGenerator/Hydrate.php
/usr/share/php/ProxyManager/ProxyGenerator/Hydrator/MethodGenerator/SetAccessorProperties.php
/usr/share/php/ProxyManager/ProxyGenerator/Hydrator/PropertyGenerator/
/usr/share/php/ProxyManager/ProxyGenerator/Hydrator/PropertyGenerator/PropertyAccessor.php