https://jena.apache.org/documentation/javadoc/arq/org.apache.jena.arq/org/apache/jena/sparql/expr/ExprFunction2.html
ExprFunction2 (Apache Jena ARQ)
declaration: module: org.apache.jena.arq, package: org.apache.jena.sparql.expr, class: ExprFunction2
apache jenaarq