public Optional<Output<Either<Integer,String>>> port() {
        return Optional.ofNullable(this.port);
    }
@return If specified, the port on the given protocol.  This can either be a numerical or named port on a pod.  If this field is not provided, this matches all port names and numbers. If present, only traffic on the specified protocol AND port will be matched.
sdk/java/src/main/java/com/pulumi/kubernetes/extensions/v1beta1/inputs/NetworkPolicyPortPatchArgs.java