def METHOD_NAME(self):
    """
    Get and return widget from cache.
    Raises:
        Http404: If the widget can not be found or no id is provided.
    Returns:
        GFKSelect2Widget: Widget from cache.
    """
    from django_select2.cache import cache
    field_id = self.kwargs.get('field_id', self.request.GET.get('field_id', None))
    if not field_id:
        raise Http404('No "field_id" provided.')
    try:
        key = signing.loads(field_id)
    except BadSignature:
        raise Http404('Invalid "field_id".')
    else:
        cache_key = f'{settings.SELECT2_CACHE_PREFIX}{key}'
        widget_dict = cache.get(cache_key)
        if widget_dict is None:
            raise Http404('field_id not found')
        if widget_dict.pop('url') != self.request.path:
            raise Http404('field_id was issued for the view.')
    queryset = QuerySetSequence(*[qs.all() for qs, qs.query in widget_dict.pop('queryset')])
    self.queryset = queryset
    widget_dict['queryset'] = self.queryset
    widget_cls = widget_dict.pop('cls')
    return widget_cls(**widget_dict)