public void set(Object base, long offset, int len) {
        this.base = base;
        this.offset = offset;
        this.len = len;

        this.hashCode = HASHER.hashUnsafeWords(base, offset, len);
    }
A bytes wrapper mainly used to correctly compare contents of two byte lists.
indexr-common/src/main/java/io/indexr/util/ByteArrayWrapper.java