It is known that modern Ubuntu versions such as Ubuntu 18.04 LTS has corresponding
tortoisehg-caja package. The TortoiseHG package provides GUI for Mercurial.
This results in nice looking item in drop-down menu:
But old Ubuntu 16.04 LTS does not have such package.
Is it possible to have TortoiseHG integration into Caja file-manager on 16.04 LTS?