/usr/share/perl5/Mouse/Meta/Attribute/Custom/Trait/String.pm is in libmousex-nativetraits-perl 1.07-1.
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 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | package Mouse::Meta::Attribute::Custom::Trait::String;
use strict;
sub register_implementation { 'MouseX::NativeTraits::Str' }
1;
__END__
=head1 NAME
Mouse::Meta::Attribute::Custom::Trait::String - Shortcut for Str trait
=head1 DESCRIPTION
This module is an alias to MouseX::NativeTraits::Str, which allows
you to refer the trait as C<String>.
=head1 SEE ALSO
L<MouseX::NativeTraits::Str>
L<MouseX::NativeTraits>
=cut
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