#' @param cl (`character(1)`)\cr
#'   Class of learner. By convention, all classification learners
#'   start with \dQuote{classif.} all regression learners with
#'   \dQuote{regr.} all survival learners start with \dQuote{surv.}
#'   all clustering learners with \dQuote{cluster.} and all multilabel
#'   classification learners start with \dQuote{multilabel.}.
#'   A list of all integrated learners is available on the
#'   [learners] help page.
#' @md
