Gio.Application.prototype.hold
function hold(): void { // Gjs wrapper for g_application_hold() }
Increases the use count of application.
Use this function to indicate that the application has a reason to continue to run. For example, Gio.Application.prototype.hold is called by GTK+ when a toplevel window is on the screen.
To cancel the hold, call Gio.Application.prototype.release.