/usr/share/ is in libnetty-3.9-java 3.9.0.Final-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/java/
/usr/share/java/netty-3.9.0.Final.jar
/usr/share/maven-repo/
/usr/share/maven-repo/io/
/usr/share/maven-repo/io/netty/
/usr/share/maven-repo/io/netty/netty/
/usr/share/maven-repo/io/netty/netty/3.9.0.Final/
/usr/share/maven-repo/io/netty/netty/3.9.0.Final/netty-3.9.0.Final.pom
/usr/share/maven-repo/io/netty/netty/debian/
/usr/share/maven-repo/io/netty/netty/debian/netty-debian.pom
/usr/share/doc/
/usr/share/doc/libnetty-3.9-java/
/usr/share/doc/libnetty-3.9-java/copyright
/usr/share/doc/libnetty-3.9-java/changelog.Debian.gz
/usr/share/maven-repo/io/netty/netty/3.9.0.Final/netty-3.9.0.Final.jar
/usr/share/maven-repo/io/netty/netty/debian/netty-debian.jar