
Keep the class only while the contract holds
Source:R/classes.R
dplyr_reconstruct.bmmtools_recovery.Rddplyr::filter() and friends return a recovery object; a select()
that drops a contract column returns a plain tibble.

R/classes.R
dplyr_reconstruct.bmmtools_recovery.Rddplyr::filter() and friends return a recovery object; a select()
that drops a contract column returns a plain tibble.