docs: public Ability claimCreator() {
      return builder()
          .name(CLAIM)
          .locality(ALL)
          .privacy(CREATOR)
          .input(0)
          .action(ctx -> {
            Set<Integer> admins = admins();
            int id = creatorId();
  
            if (admins.contains(id))
              send(ABILITY_CLAIM_FAIL, ctx);
            else {
              admins.add(id);
              send(ABILITY_CLAIM_SUCCESS, ctx);
            }
          })
          .post(commitTo(db))
          .build();
    }