HeadersToKeep: PlainDescriptor<number>

Maximal number of finalized headers to keep in the storage.

The setting is there to prevent growing the on-chain state indefinitely. Note the setting does not relate to block numbers - we will simply keep as much items in the storage, so it doesn't guarantee any fixed timeframe for finality headers.

Incautious change of this constant may lead to orphan entries in the runtime storage.