docs: def sponsored(self, **kwargs):
          """Search containing any sponsored pieces of Content."""
          eqs = self.search(**kwargs)
          eqs = eqs.filter(AllSponsored())
          published_offset = getattr(settings, "RECENT_SPONSORED_OFFSET_HOURS", None)
          if published_offset:
              now = timezone.now()
              eqs = eqs.filter(
                  Published(
                      after=now - timezone.timedelta(hours=published_offset),
                      before=now
                  )
              )
          return eqs