docs: public final int applyUpgradesSince( int lastId,
                                           Context resources ) {
          int lastUpgradeId = lastId;
          for (UpgradeOperation op : operations) {
              if (op.getId() <= lastId) continue;
              LOGGER.debug("Upgrade {0}: starting", op);
              op.apply(resources);
              LOGGER.debug("Upgrade {0}: complete", op);
              lastUpgradeId = op.getId();
          }
          return lastUpgradeId;
      }