Fetches detail records for up to batchSize items that have neither been cached nor flagged missing, mutating details and missingIds in place.
batchSize
details
missingIds
Batch configuration and mutable state.
Counts describing this run's progress and whether the cache is complete.
Fetches detail records for up to
batchSizeitems that have neither been cached nor flagged missing, mutatingdetailsandmissingIdsin place.