Link: https://dataframely.readthedocs.io/en/latest/_api/dataframely.failure.html#dataframely.failure.FailureInfo.write_parquet

This doesn't explain whether it writes out any rules info, whether it writes multiple files, etc.

An example would be helpful, or at least a list of additional columns/filters applied.

An easy assumption to make is that it's the same as failure_info.invalid() (but in parquet format instead of returning a dataframe).