Message::Passing::Role::CLIComponent3pm

    package My::Message::Passing::Script;
    use Moo;
    use MooX::Options;
    use Message::Passing::Role::CLIComponent;
    use Message::Passing::DSL;
    use namespace::clean -except => 'meta';
    with
        CLIComponent( name => 'input', default => 'STDIN' ),
        'Message::Passing::Role::Script';
    sub build_chain {
        my $self = shift;
        message_chain {
            input example => ( %{ $self->input_options }, output_to => 'test_out', class => $self->input, );
            output test_out => ( ... );
        };
    }
    __PACKAGE__->start unless caller;
    1;