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+#' Perform a hierarchical model fit with multiple starting values
+#'
+#' The purpose of this method is to check if a certain algorithm for fitting
+#' nonlinear hierarchical models (also known as nonlinear mixed-effects models)
+#' will reliably yield results that are sufficiently similar to each other, if
+#' started with a certain range of reasonable starting parameters. It is
+#' inspired by the article on practical identifiabiliy in the frame of nonlinear
+#' mixed-effects models by Duchesne et al (2021).
+#'
+#' @references Duchesne R, Guillemin A, Gandrillon O, Crauste F. Practical
+#' identifiability in the frame of nonlinear mixed effects models: the example
+#' of the in vitro erythropoiesis. BMC Bioinformatics. 2021 Oct 4;22(1):478.
+#' doi: 10.1186/s12859-021-04373-4.
+#' @export
+multistart <- function(object, n = 50, ...)
+{
+  UseMethod("multistart", object)
+}
+
+#' @rdname multistart
+#' @export
+multistart.saem.mmkin <- function(object, n = 50, ...) {
+  
+}