/usr/share/maven-repo/org/glassfish/jaxb/xsom/debian/xsom-debian.jar is in libxsom-java 2.3.0-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/glassfish/jaxb/xsom/debian/../../../../../../java/xsom.jar