} else if (k == "reference_scaler") {
_reference_scaler = Scaler::from_id (v);
} else if (k == "reference_filter") {
_reference_filters.push_back (Filter::from_id (v));
} else if (k == "server") {
_servers.push_back (ServerDescription::create_from_metadata (v));
} else if (k == "reference_scaler") {
_reference_scaler = Scaler::from_id (v);
} else if (k == "reference_filter") {
_reference_filters.push_back (Filter::from_id (v));
} else if (k == "server") {
_servers.push_back (ServerDescription::create_from_metadata (v));