@Override
    public int write(OutputStream out, boolean withTags) throws IOException {
      return ValueAndTagRewriteCell.write(out, withTags, this.cell, this.value, this.tags);
    }
Made into a static method so as to reuse the logic within
ValueAndTagRewriteByteBufferExtendedCell
hbase-common/src/main/java/org/apache/hadoop/hbase/PrivateCellUtil.java