public static long extractValueHash(final ByteBuffer byteBuffer) {
        return byteBuffer.getLong(VALUE_HASH_OFFSET);
    }
<pre>{@code
<type ID int><hash code long><value bytes................>
}</pre>
stroom-pipeline/src/main/java/stroom/pipeline/refdata/store/offheapstore/serdes/StagingValueSerde.java