/usr/share/perl5/Poet/Mason/Plugin.pm is in libpoet-perl 0.15-1.
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 8 | package Poet::Mason::Plugin;
$Poet::Mason::Plugin::VERSION = '0.15';
use Moose;
with 'Mason::Plugin';
__PACKAGE__->meta->make_immutable();
1;
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