docs: def flat_prior_model_tuples(self):
          """
          Returns
          -------
          prior_model_tuples: [(String, PriorModel)]
              A list of tuples with the names of prior models and associated prior models. Names are fully qualified by
              all objects in which they are embedded.
          """
          return [("{}".format(prior_model_name), flat_prior_model) for
                  prior_model_name, prior_model in
                  self.prior_model_tuples for
                  flat_prior_model_name, flat_prior_model in
                  prior_model.flat_prior_model_tuples]