https://jena.apache.org/documentation/javadoc/geosparql/org.apache.jena.geosparql/org/apache/jena/geosparql/spatial/filter_functions/TransformDatatypeFF.html
TransformDatatypeFF (Apache Jena GeoSPARQL)
declaration: module: org.apache.jena.geosparql, package: org.apache.jena.geosparql.spatial.filter_functions, class: TransformDatatypeFF
apache jenageosparql