Get arguments in activate method in Gtk.Application?

[ghost]

Hi,
I'm building an AppImage sideloader. I need to get the first argument. It's passed to main and then to MyApp.run(args), but then it's not passed to activate.
Thanks

[ghost]

Solved with open method. Example: https://github.com/elementary/sideload/blob/master/src/Application.vala