https://jena.apache.org/documentation/javadoc/arq/org.apache.jena.arq/org/apache/jena/sparql/expr/urifunctions/package-tree.html
org.apache.jena.sparql.expr.urifunctions Class Hierarchy (Apache Jena ARQ)
tree: module: org.apache.jena.arq, package: org.apache.jena.sparql.expr.urifunctions
apache jenaclass hierarchysparqlexpr