/usr/share/java/modello-maven-plugin-1.1.jar is in libmodello-maven-plugin-java 1.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/../maven-repo/org/codehaus/modello/modello-maven-plugin/1.1/modello-maven-plugin-1.1.jar