/usr/share/jetty9/lib/jetty-xml-9.2.23.v20171218.jar is in jetty9 9.2.23-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/jetty9/lib/../../java/jetty9-xml.jar
/usr/share/jetty9/lib/../../java/jetty9-xml.jar