/usr/share/maven-repo/com/miglayout/miglayout-swt/debian/miglayout-swt-debian.jar is in libmiglayout-java 4.2-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/com/miglayout/miglayout-swt/debian/../../../../../java/miglayout-swt.jar