docs: public void fillColumnMutation(ColumnListMutation<ByteBuffer> clm, Object entity) {
          try {
              ByteBuffer columnName = toColumnName(entity);
              ByteBuffer value      = valueMapper.toByteBuffer(entity);
              
              clm.putColumn(columnName, value);
          } catch(Exception e) {
              throw new PersistenceException("failed to fill mutation batch", e);
          }
      }