protected ManifestWriter<DeleteFile> newDeleteManifestWriter(PartitionSpec spec) {
    return ManifestFiles.writeDeleteManifest(
        ops.current().formatVersion(), spec, newManifestOutputFile(), snapshotId());
  }
@deprecated will be removed in 1.7.0; Use {@link SnapshotProducer#newManifestOutputFile}
    instead
iceberg/patched-iceberg-core/src/main/java/org/apache/iceberg/SnapshotProducer.java