Path::Dispatcher::Rule::Under

    my $ticket = Path::Dispatcher::Rule::Tokens->new(
        tokens => [ 'ticket' ],
        prefix => 1,
    );
    my $create = Path::Dispatcher::Rule::Tokens->new(
        tokens => [ 'create' ],
        block  => sub { create_ticket() },
    );
    my $delete = Path::Dispatcher::Rule::Tokens->new(
        tokens => [ 'delete', qr/^\d+$/ ],
        block  => sub { delete_ticket(shift->pos(2)) },
    );
    my $rule = Path::Dispatcher::Rule::Under->new(
        predicate => $ticket,
        rules     => [ $create, $delete ],
    );
    $rule->match("ticket create");
    $rule->match("ticket delete 3");

Rules of this class have two-phase matching: if the predicate is matched, then the contained rules are matched. The benefit of this is less repetition of the predicate, both in terms of code and in matching it.