public Optional<Integer> port() {
        return Optional.ofNullable(this.port);
    }
@return If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `port` should be a valid port number (1-65535, inclusive).
sdk/java/src/main/java/com/pulumi/kubernetes/apiregistration/v1beta1/outputs/ServiceReference.java