public static Bytes toBinary(final Windowed<Bytes> sessionKey) {
            return toBinary(sessionKey.key(), sessionKey.window().start(), sessionKey.window().end());
        }
@param key the key in the range
@param from the earliest end timestamp in the range
streams/src/main/java/org/apache/kafka/streams/state/internals/PrefixedSessionKeySchemas.java