presto-main/src/main/java/io/prestosql/operator/SpatialJoinOperator.java/SpatialJoinOperatorFactory/SpatialJoinOperatorFactory
class SpatialJoinOperatorFactory:        private SpatialJoinOperatorFactory(SpatialJoinOperatorFactory other)
        {
            this.operatorId = other.operatorId;
            this.planNodeId = other.planNodeId;
            this.joinType = other.joinType;
            this.probeTypes = other.probeTypes;
            this.probeOutputChannels = other.probeOutputChannels;
            this.probeGeometryChannel = other.probeGeometryChannel;
            this.partitionChannel = other.partitionChannel;
            this.pagesSpatialIndexFactory = other.pagesSpatialIndexFactory;
            this.referenceCount = other.referenceCount;
            this.closed = false;
            referenceCount.retain();
        }