sub also (&;@) {
  return @_;
}

##</code><code>##

multifoo { $_ * 2 }
    also { foo($_) }
         @things;

##</code><code>##

subtype 'ModernDateTime'
   => as 'DateTime'
   => where { $_->year() >= 1980 }
   => message { 'The date is not modern enough' };