/usr/share/maven-repo/org/apache/maven/doxia/doxia-book/debian/doxia-book-debian.jar is in libdoxia-java 1.1.4-1ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/apache/maven/doxia/doxia-book/debian/../1.1.4/doxia-book-1.1.4.jar