<transpile from="Java" to="C#" via="XML" with="XSLT"/>

Abstract

This paper describes a project in which XSLT 3.0 was used to convert a substantial body of Java code (around 500K lines of code) to C#. The Java code, as it happens, is the source code of the Saxon XSLT processor, but that's not really relevant: it could have been anything.