code: private void serializeColumn(String fieldName, byte[] family,
        byte[] qualifier, Object fieldValue, Put put) {
      // column mapping, so simply serialize the value and add the bytes
      // to the put.
      byte[] bytes = serializeColumnValueToBytes(fieldName, fieldValue);
      put.add(family, qualifier, bytes);
    }
docs: Serialize the column value, and update the Put with the serialized bytes.
  
  @param fieldName
  The name of the entity field we are serializing
  @param family
  The column family this field maps to
  @param qualifier
  The qualifier this field maps to
  @param fieldValue
  The value we are serializing
  @param put
  The Put we are updating with the serialized bytes.