public JsonArray filter(JsonArray gatewayConfig) {
if (destination == null) {
return gatewayConfig;
} else {
final JsonArray newGatewayConfig = new JsonArray();
newGatewayConfig.addAll(gatewayConfig);
final JsonObject entry = new JsonObject();
entry.addProperty("matcher", "*");
entry.addProperty("server", destination.getDestinationAddress());
newGatewayConfig.add(entry);
return newGatewayConfig;