Not exactly sure what it's for? it's to stream your data to Parquet files on (eg) S3 and keep somewhere the exact schema at each point in time? or is it somethi

Not exactly sure what it's for? it's to stream your data to Parquet files on (eg) S3 and keep somewhere the exact schema at each point in time? or is it something else? would be nice to have some tutorial/use-cases in the doc :)