docs: @Override
      public ResultSet getImportedKeys( String catalog,
                                        String schema,
                                        String table ) throws SQLException {
          @SuppressWarnings( "unchecked" )
          Map<?, Object>[] metadataList = new Map[JDBCColumnPositions.REFERENCE_KEYS.MAX_COLUMNS];
          metadataList[0] = MetadataProvider.getColumnMetadata(catalogName, null, JDBCColumnNames.REFERENCE_KEYS_INFO.PK_TABLE_CAT,
                                                               JcrType.DefaultDataTypes.STRING,
                                                               ResultsMetadataConstants.NULL_TYPES.NULLABLE, this.connection);
          metadataList[1] = MetadataProvider.getColumnMetadata(catalogName, null,
                                                               JDBCColumnNames.REFERENCE_KEYS_INFO.PK_TABLE_SCHEM,
                                                               JcrType.DefaultDataTypes.STRING,
                                                               ResultsMetadataConstants.NULL_TYPES.NULLABLE, this.connection);
          metadataList[2] = MetadataProvider.getColumnMetadata(catalogName, null,
                                                               JDBCColumnNames.REFERENCE_KEYS_INFO.PK_TABLE_NAME,
                                                               JcrType.DefaultDataTypes.STRING,
                                                               ResultsMetadataConstants.NULL_TYPES.NOT_NULL, this.connection);
          metadataList[3] = MetadataProvider.getColumnMetadata(catalogName, null,
                                                               JDBCColumnNames.REFERENCE_KEYS_INFO.PK_COLUMN_NAME,
                                                               JcrType.DefaultDataTypes.STRING,
                                                               ResultsMetadataConstants.NULL_TYPES.NOT_NULL, this.connection);
          metadataList[4] = MetadataProvider.getColumnMetadata(catalogName, null, JDBCColumnNames.REFERENCE_KEYS_INFO.FK_TABLE_CAT,
                                                               JcrType.DefaultDataTypes.STRING,
                                                               ResultsMetadataConstants.NULL_TYPES.NULLABLE, this.connection);
          metadataList[5] = MetadataProvider.getColumnMetadata(catalogName, null,
                                                               JDBCColumnNames.REFERENCE_KEYS_INFO.FK_TABLE_SCHEM,
                                                               JcrType.DefaultDataTypes.STRING,
                                                               ResultsMetadataConstants.NULL_TYPES.NULLABLE, this.connection);
          metadataList[6] = MetadataProvider.getColumnMetadata(catalogName, null,
                                                               JDBCColumnNames.REFERENCE_KEYS_INFO.FK_TABLE_NAME,
                                                               JcrType.DefaultDataTypes.STRING,
                                                               ResultsMetadataConstants.NULL_TYPES.NOT_NULL, this.connection);
          metadataList[7] = MetadataProvider.getColumnMetadata(catalogName, null,
                                                               JDBCColumnNames.REFERENCE_KEYS_INFO.FK_COLUMN_NAME,
                                                               JcrType.DefaultDataTypes.STRING,
                                                               ResultsMetadataConstants.NULL_TYPES.NOT_NULL, this.connection);
          metadataList[8] = MetadataProvider.getColumnMetadata(catalogName, null, JDBCColumnNames.REFERENCE_KEYS_INFO.KEY_SEQ,
                                                               JcrType.DefaultDataTypes.LONG,
                                                               ResultsMetadataConstants.NULL_TYPES.NOT_NULL, this.connection);
          metadataList[9] = MetadataProvider.getColumnMetadata(catalogName, null, JDBCColumnNames.REFERENCE_KEYS_INFO.UPDATE_RULE,
                                                               JcrType.DefaultDataTypes.LONG,
                                                               ResultsMetadataConstants.NULL_TYPES.NOT_NULL, this.connection);
          metadataList[10] = MetadataProvider.getColumnMetadata(catalogName, null, JDBCColumnNames.REFERENCE_KEYS_INFO.DELETE_RULE,
                                                                JcrType.DefaultDataTypes.LONG,
                                                                ResultsMetadataConstants.NULL_TYPES.NOT_NULL, this.connection);
          metadataList[11] = MetadataProvider.getColumnMetadata(catalogName, null, JDBCColumnNames.REFERENCE_KEYS_INFO.FK_NAME,
                                                                JcrType.DefaultDataTypes.STRING,
                                                                ResultsMetadataConstants.NULL_TYPES.NULLABLE, this.connection);
          metadataList[12] = MetadataProvider.getColumnMetadata(catalogName, null, JDBCColumnNames.REFERENCE_KEYS_INFO.PK_NAME,
                                                                JcrType.DefaultDataTypes.STRING,
                                                                ResultsMetadataConstants.NULL_TYPES.NULLABLE, this.connection);
          metadataList[13] = MetadataProvider.getColumnMetadata(catalogName, null,
                                                                JDBCColumnNames.REFERENCE_KEYS_INFO.DEFERRABILITY,
                                                                JcrType.DefaultDataTypes.LONG,
                                                                ResultsMetadataConstants.NULL_TYPES.NOT_NULL, this.connection);
          JcrStatement jcrstmt = new JcrStatement(this.connection);
          MetadataProvider provider = new MetadataProvider(metadataList);
          ResultSetMetaDataImpl resultSetMetaData = new ResultSetMetaDataImpl(provider);
          List<List<?>> records = Collections.emptyList();
          QueryResult queryresult = MetaDataQueryResult.createResultSet(records, resultSetMetaData);
          return new JcrResultSet(jcrstmt, queryresult, resultSetMetaData);
      }