private byte[] removePrefix(final byte[] keyWithPrefix) {
            final int rawKeyLength = keyWithPrefix.length - prefix.length;
            final byte[] rawKey = new byte[rawKeyLength];
            System.arraycopy(keyWithPrefix, prefix.length, rawKey, 0, rawKeyLength);
            return rawKey;
        }
Manages translation between raw key and the key to be stored into the physical store.
The key for the physical store is the raw key prepended with a fixed-length prefix.
streams/src/main/java/org/apache/kafka/streams/state/internals/LogicalKeyValueSegment.java