AppIndicator.Indicator.prototype.set_ordering_index

function set_ordering_index(ordering_index:guint32):void {
    // Gjs wrapper for app_indicator_set_ordering_index()
}

Sets the ordering index for the app indicator which effects the placement of it on the panel. For almost all app indicator this is not the function you're looking for.

Wrapper function for property AppIndicator.ordering-index.