/usr/share/maven-repo/org/codehaus/plexus/plexus-container-default/debian/plexus-container-default-debian.jar is in libplexus-container-default-java 1.7.1-7.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/codehaus/plexus/plexus-container-default/debian/../../../../../../java/plexus-container-default.jar