/usr/share/man/man1/javafxpackager.1.gz is in openjfx 8u161-b12-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/../../../lib/jvm/java-8-openjdk-amd64/man/man1/javafxpackager.1.gz