/usr/share/maven-repo/org/apache/activemq/protobuf/activemq-protobuf-test/1.1/activemq-protobuf-test-1.1.jar is in libactivemq-protobuf-java 1.1-6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/apache/activemq/protobuf/activemq-protobuf-test/1.1/../../../../../../../java/activemq-protobuf-test.jar