https://jena.apache.org/documentation/javadoc/geosparql/org.apache.jena.geosparql/org/locationtech/jts/index/strtree/STRtreeSerializer.html
STRtreeSerializer (Apache Jena GeoSPARQL)
declaration: module: org.apache.jena.geosparql, package: org.locationtech.jts.index.strtree, class: STRtreeSerializer
apache jenageosparql