docs: public static Collection<Column> getPrimaryKeyColumns(Table catalogTable) {
          Collection<Column> columns = new ArrayList<>();
          Index catalog_idx = null;
          try {
              catalog_idx = CatalogUtil.getPrimaryKeyIndex(catalogTable);
          } catch (Exception ex) {
              // IGNORE
              return (columns);
          }
          assert(catalog_idx != null);
  
          for (ColumnRef catalog_col_ref : getSortedCatalogItems(catalog_idx.getColumns(), "index")) {
              columns.add(catalog_col_ref.getColumn());
          }
          return (columns);
      }