code: public final <T> void prepareColumnValuesForUpdate(
      final ColumnsValues pColumnsValues,
        final T pEntity) throws Exception {
      //remove old version and ID columns:
      pColumnsValues.getLongsMap().remove(ISrvOrm.VERSIONOLD_NAME);
      TableSql tableSql = this.tablesMap.get(pEntity.getClass().getSimpleName());
      for (String idFldNm : tableSql.getIdColumnsNames()) {
        pColumnsValues.remove(idFldNm);
      }
    }
docs: <p>Prepare ColumnsValues for update - remove PK field(s)
  and OLD_VERSION.</p>
  @param <T> entity type
  @param pEntity entity
  @param pColumnsValues ColumnsValues
  @throws Exception - an exception