Root.pm

__PACKAGE__->config(
    default => 'text/html',
    skip => { 'application/xml' => 1 },
    map => {
        'application/json' => [qw/ JSON /],
        map { $_ => [qw/ View Default /] }
        qw( text/css text/html text/plain
            application/atom+xml application/rss+xml 
            application/rss application/xml )
    }
);