code: public static byte[] getRowKey(final BeanId id, final UniqueIds uids) {
          final byte[] iid = uids.getUiid().getId(id.getInstanceId());
          final byte[] sid = uids.getUsid().getId(id.getSchemaName());
          final byte[] rowkey = new byte[sid.length + iid.length];
          System.arraycopy(sid, 0, rowkey, 0, sid.length);
          System.arraycopy(iid, 0, rowkey, sid.length, iid.length);
          return rowkey;
      }
docs: Get the hbase rowkey of some bean id.