my $storeMode = $c->config->{store_mode} // "direct";
    my $channelUri =
        $storeMode eq "direct" ? $c->uri_for('/')
        : $storeMode eq "s3-binary-cache" ?
          ($c->config->{binary_cache_public_uri} // ("https://" . $c->config->{binary_cache_s3_bucket} . ".s3.amazonaws.com/"))
        : die "Not supported.\n";

        . " " . $c->uri_for('/');

        . " " . $channelUri;