#!/usr/bin/perl -I../lib

package My::IO;

use metaclass 'Moose::Meta::Class' =>
    instance_metaclass => 'MooseX::GlobRef::Meta::Instance';

use Moose;

has 'filename' => ( is => 'ro', isa => 'Str', required => 1 );

sub open {
  my $fh = shift;
  my $hashref = ${*$fh};
  open $fh, $hashref->{filename} or confess "cannot open";
  return $fh;
}

sub getlines {
  my $fh = shift;
  return readline $fh;
}

my $io = new My::IO filename=>'/etc/passwd';

print "::::::::::::::\n";
print $io->filename, "\n";
print "::::::::::::::\n";
$io->open;
print $io->getlines;