def METHOD_NAME(self):
    queryset = Notification.objects.get_notifications_of(self.request.user)
    subscription_type = self.request.query_params.get("subscription_type", None)
    if subscription_type:
        queryset = queryset.filter(subscription__content_type__model=subscription_type)
    _type = self.request.query_params.get("type", None)
    if _type:
        queryset = queryset.filter(content_type__model=_type)
    is_read = str(self.request.query_params.get("is_read", None)).lower()
    if is_read == "true":
        queryset = queryset.filter(is_read=True)
    elif is_read == "false":
        queryset = queryset.filter(is_read=False)
    return queryset