#' Reverse preprocessing
#'
#' Reverse the effect of a preprocessing step on a DatasetExperiment.
#' @param M a model object
#' @param D a DatasetExperiment object
#' @return Returns a modified DatasetExperiment object
#' @name model_reverse
#' @examples
#' M = example_model()
#' D = model_reverse(M,iris_DatasetExperiment())
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