/usr/share/perl5/Syntax/Highlight/Engine/Kate/BaseTestchild.pm is in libsyntax-highlight-engine-kate-perl 0.09+dfsg-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 9 10 | package Syntax::Highlight::Engine::Kate::BaseTestchild;
our $VERSION = '0.07';
use strict;
use warnings;
# stub, just to get indexed by PAUSE and hide old version of this file from CPAN smokers.
1;
|