/usr/ is in libbookkeeper-java 4.2.4-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/java/
/usr/share/java/bookkeeper-server.jar
/usr/share/maven-repo/
/usr/share/maven-repo/org/
/usr/share/maven-repo/org/apache/
/usr/share/maven-repo/org/apache/bookkeeper/
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper-server/
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper-server/debian/
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper-server/debian/bookkeeper-server-debian.pom
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper-server/4.2.4/
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper-server/4.2.4/bookkeeper-server-4.2.4.pom
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper/
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper/debian/
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper/debian/bookkeeper-debian.pom
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper/4.2.4/
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper/4.2.4/bookkeeper-4.2.4.pom
/usr/share/doc/
/usr/share/doc/libbookkeeper-java/
/usr/share/doc/libbookkeeper-java/README
/usr/share/doc/libbookkeeper-java/copyright
/usr/share/doc/libbookkeeper-java/changelog.Debian.gz
/usr/share/java/bookkeeper-server-4.2.4.jar
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper-server/debian/bookkeeper-server-debian.jar
/usr/share/maven-repo/org/apache/bookkeeper/bookkeeper-server/4.2.4/bookkeeper-server-4.2.4.jar