public static void zero(byte[] b, int offset, int length) {
        Preconditions.checkPositionIndex(offset, b.length, "offset");
        Preconditions.checkArgument(length > 0, "length must be greater than 0");
        Preconditions.checkPositionIndex(offset + length, b.length, "offset + length");
        Arrays.fill(b, offset, offset + length, (byte) 0);
    }
Fill given array with zeros at the specified position.
stroom-bytebuffer/src/main/java/stroom/bytebuffer/hbase/Bytes.java