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A survival task for the whas data set.
R6::R6Class inheriting from TaskSurv.
mlr3::mlr_tasks$get("whas") mlr3::tsk("whas")
Columns "id", "yrgrp", and "dstat" are removed so target is status at last follow-up. Column "sex" renamed to "sexF", "lenfol" to "time", and "fstat" to "status".