/usr/share/perl5/TM/Materialized/Null.pm is in libtm-perl 1.56-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | package TM::Materialized::Null;
use TM;
use base qw(TM);
use Class::Trait qw(TM::ResourceAble TM::Synchronizable TM::Synchronizable::Null);
1;
|