Gtk.Action.prototype.set_gicon
function set_gicon(icon:Gio.Icon):void {
    // Gjs wrapper for gtk_action_set_gicon()
}Sets the icon of action.
Since 2.16
- icon
- the Gio.Icon to set 
function set_gicon(icon:Gio.Icon):void {
    // Gjs wrapper for gtk_action_set_gicon()
}Sets the icon of action.
Since 2.16
the Gio.Icon to set