code: private void registerSnapshot () {
          try {
              // We cannot simply insert into the feeds table because if we are creating an empty snapshot (to create/edit
              // a GTFS feed from scratch), the feed registry table will not exist.
              // TODO copy over feed_id and feed_version from source namespace?
              // TODO: Record total snapshot processing time?
              createFeedRegistryIfNotExists(connection);
              createSchema(connection, tablePrefix);
              PreparedStatement insertStatement = connection.prepareStatement(
                      "insert into feeds values (?, null, null, null, null, null, current_timestamp, ?)");
              insertStatement.setString(1, tablePrefix);
              insertStatement.setString(2, feedIdToSnapshot);
              insertStatement.execute();
              connection.commit();
              LOG.info("Created new snapshot namespace: {}", insertStatement);
          } catch (Exception ex) {
              LOG.error("Exception while registering snapshot namespace in feeds table", ex);
              DbUtils.closeQuietly(connection);
          }
      }
docs: Add a line to the list of loaded feeds to record the snapshot and which feed the snapshot replicates.