package ReadFile; use Mouse::Role; use MyTypes; use IO::File; requires qw(lines); has '_io' => ( is => 'ro', isa => 'MyCompany::ReadFile', builder => '_build_read_file', handles => [ qw( open getlines close) ], init_arg => undef, lazy => 1, ); sub _build_read_file() { my $self = shift; IO::File->new(); } # sub read_file() { # my ( $self, $file ) = @_; # $self->open( $file); # my @lines = $self->getlines(); # $self->close(); # chomp(@lines); # $self->lines(\@lines); # } 1;