protected void cleanAll() {
    for (String manifestList : manifestLists) {
      deleteFile(manifestList);
    }
    manifestLists.clear();
    cleanUncommitted(EMPTY_SET);
  }
Returns the snapshot summary from the implementation and updates totals.
iceberg/patched-iceberg-core/src/main/java/org/apache/iceberg/SnapshotProducer.java