If you use external libraries within realvirtual.io which are not installed with realvirtual.io you must include these external libraries into the top assembly definition of realvirtual.io.
If you are programming your own scripts, it might be necessary to include Realvirtual.io into your own assembly definition to get access to the realvirtual.io (before 2022 game4automation) assemblies.
Game4Automation is using the following assemblies: