presto-geospatial/src/main/java/io/prestosql/plugin/geospatial/SpatialPartitioningStateFactory.java/SpatialPartitioningStateFactory/createSingleState
class SpatialPartitioningStateFactory:    @Override
    public SpatialPartitioningState createSingleState()
    {
        return new SingleSpatialPartitioningState();
    }