Trying to document IO::Path methods 'parent' and 'child'

gistfile1.txt

=head2 method parent

    method parent(IO::Path:D: --> IO::Path)

Removes the last portion of the path, and returns the result as a new C<IO::Path>.

    my $io = IO::Path.new( "/etc/passwd" );
    say $io.parent;                          # "/etc".IO

=head2 method child

    method child(IO::Path:D: $childname --> IO::Path)

Appends C<$childname> to the end of the path, adding path separators where
needed and returns the result as a new C<IO::Path>.

    my $io = IO::Path.new( "/bin" );
    say $io.child('netstat');                # "/etc/netstat".IO