# Package org.apache.lucene.codecs

Common APIs for use by backwards compatibility codecs.

See: Description

- Class Summary
  Class | Description
  --- | ---
  UndeadNormsProducer | Used only for backwards compatibility corner case, to provide re-animated norms when all fields are undead.

## Package org.apache.lucene.codecs Description

Common APIs for use by backwards compatibility codecs.

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