fn get_replay_checkpoint(
region_id: RegionId,
topic_region_values: &Option<HashMap<RegionId, TopicRegionValue>>,
) -> Option<ReplayCheckpoint>
fn get_replay_checkpoint(
region_id: RegionId,
topic_region_values: &Option<HashMap<RegionId, TopicRegionValue>>,
) -> Option<ReplayCheckpoint>