@Override
        public boolean equals(Object a) {
            if (a instanceof BasicJsonValue) {
                return node().equals(((BasicJsonValue) a).node());
            }
            return false;
        }
If this is a JSON array, return a JsonArray wrapped by an `Optional`. Otherwise, return Empty.
server-common/src/main/java/org/apache/kafka/server/util/json/JsonValue.java