Gtk.IconSource.prototype.set_state

function set_state(state:Gtk.StateType):void {
    // Gjs wrapper for gtk_icon_source_set_state()
}

Sets the widget state this icon source is intended to be used with.

Setting the widget state on an icon source makes no difference if the state is wildcarded. Therefore, you should usually call Gtk.set_state_wildcarded to un-wildcard it in addition to calling this function.