https://lucene.apache.org/core/6_2_1/core/org/apache/lucene/index/class-use/PersistentSnapshotDeletionPolicy.html
Uses of Class org.apache.lucene.index.PersistentSnapshotDeletionPolicy (Lucene 6.2.1 API)
apache lucene
https://lucene.apache.org/core/4_6_0/core/org/apache/lucene/index/PersistentSnapshotDeletionPolicy.html
PersistentSnapshotDeletionPolicy (Lucene 4.6.0 API)
luceneapi
https://lucene.apache.org/core/5_4_0/core/org/apache/lucene/index/PersistentSnapshotDeletionPolicy.html
PersistentSnapshotDeletionPolicy (Lucene 5.4.0 API)
luceneapi