def METHOD_NAME(request, event_id, region_slug, language_slug):
    """
    Remove archived flag for an event
    :param request: Object representing the user call
    :type request: ~django.http.HttpRequest
    :param event_id: internal id of the event to be un-archived
    :type event_id: int
    :param region_slug: slug of the region which the event belongs to
    :type region_slug: str
    :param language_slug: current GUI language slug
    :type language_slug: str
    :return: The rendered template response
    :rtype: ~django.template.response.TemplateResponse
    """
    region = request.region
    event = get_object_or_404(region.events, id=event_id)
    event.METHOD_NAME()
    logger.debug("%r restored by %r", event, request.user)
    messages.success(request, _("Event was successfully restored"))
    return redirect(
        "events",
        **{
            "region_slug": region_slug,
            "language_slug": language_slug,
        },
    )