@Override
            int putShort(byte[] bytes, int offset, short val) {
                bytes[offset + 1] = (byte) val;
                val >>= 8;
                bytes[offset] = (byte) val;
                return offset + SIZEOF_SHORT;
            }
Returns the Unsafe-using Converter, or falls back to the pure-Java implementation if unable
to do so.
stroom-bytebuffer/src/main/java/stroom/bytebuffer/hbase/Bytes.java