@CustomType.Setter
        public Builder namespace(String namespace) {
            if (namespace == null) {
              throw new MissingRequiredPropertyException("ServiceReference", "namespace");
            }
            this.namespace = namespace;
            return this;
        }
@return port is an optional service port at which the webhook will be contacted. `port` should be a valid port number (1-65535, inclusive). Defaults to 443 for backward compatibility.
sdk/java/src/main/java/com/pulumi/kubernetes/apiextensions/v1/outputs/ServiceReference.java