## Uses of Class
org.apache.lucene.util.SetOnce

Packages that use SetOnce
org.apache.lucene.index: Code to maintain and access indices.

Uses of SetOnce in org.apache.lucene.index

Fields in org.apache.lucene.index declared as SetOnce
`protected SetOnce<IndexWriter>` `MergePolicy.writer` `IndexWriter` that contains this instance.

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