/usr/share/jetty9/lib/jetty-alpn-server-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-alpn-server.jar
/usr/share/jetty9/lib/../../java/jetty9-alpn-server.jar