#' @param obj (list of [Prediction] | list of [ResampleResult] | [BenchmarkResult])\cr
#'   Single prediction object, list of them, single resample result, list of them, or a benchmark result.
#'   In case of a list probably produced by different learners you want to compare, then
#'   name the list with the names you want to see in the plots, probably
#'   learner shortnames or ids.
#' @md
