Path::Dispatcher::Rule::Metadata

    my $path = Path::Dispatcher::Path->new(
        path => '/REST/Ticket'
        metadata => {
            http_method => 'POST',
        },
    );
    my $rule = Path::Dispatcher::Rule::Metadata->new(
        field   => 'http_method',
        matcher => Path::Dispatcher::Rule::Eq->new(string => 'POST'),
    );
    $rule->run($path);

Rules of this class match the metadata portion of a path.