docs: public List<String> getProperties(TableRef tableRef) {
          List<String> result = new ArrayList<String>();
          TableMapping tableMapping = mappedClasses.get(tableRef);
          if (tableMapping == null) return result;
          for (ColumnMetaData columnMetaData : tableMapping.getMappedColumns()) {
              ColumnMapping cm = tableMapping.getColumnMapping(columnMetaData);
              result.add(cm.getPropertyName());
          }
          return result;
      }