static byte[] extractKeyBytes(final byte[] binaryKey) {
            final byte[] bytes = new byte[binaryKey.length - 2 * TIMESTAMP_SIZE - PREFIX_SIZE];
            System.arraycopy(binaryKey, PREFIX_SIZE + 2 * TIMESTAMP_SIZE, bytes, 0, bytes.length);
            return bytes;
        }
@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