/usr/share/maven-repo/com/sun/xml/stream/buffer/streambuffer/debian/streambuffer-debian.jar is in libstreambuffer-java 1.5.1-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/com/sun/xml/stream/buffer/streambuffer/debian/../../../../../../../../java/streambuffer.jar