/usr/share/doc/liblttng-ust-agent-java/changelog.Debian.gz is in liblttng-ust-agent-java 2.7.1-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/liblttng-ust-agent-java/../liblttng-ust-agent-java-jni/changelog.Debian.gz