code: @Override
      public void open() throws Exception {
          EDb edb = EDb.fromFileDesktop(databaseFile);
          spatialDb = edb.getSpatialDb();
          spatialDb.open(databaseFile.getAbsolutePath());
          GeometryColumn geometryColumnsForTable = spatialDb.getGeometryColumnsForTable(LasCellsTable.TABLENAME);
          crs = CrsUtilities.getCrsFromSrid(geometryColumnsForTable.srid);
          isOpen = true;
      }
docs: Open the main folder file and read the main index.
  
  @throws Exception