pub async fn delete_index(
region_index_id: RegionIndexId,
access_layer: &AccessLayerRef,
cache_manager: &Option<CacheManagerRef>,
) -> Result<()>pub async fn delete_index(
region_index_id: RegionIndexId,
access_layer: &AccessLayerRef,
cache_manager: &Option<CacheManagerRef>,
) -> Result<()>