code: public Map<Long, FeatureShape> getFeatureIds(String database, String table) {
          Map<String, Map<Long, FeatureShape>> tables = getTables(database);
          Map<Long, FeatureShape> featureIds = getFeatureIds(tables, table);
          return featureIds;
      }
docs: Get the mapping between feature ids and map shapes for the database and table
  
  @param database GeoPackage database
  @param table    table name
  @return feature ids to map shapes mapping
  @since 3.2.0