code: def mapper_from_prior_arguments(self, arguments):
          
          mapper = copy.deepcopy(self)
  
          for prior_model_tuple in self.prior_model_tuples:
              setattr(mapper, prior_model_tuple.name,
                      prior_model_tuple.prior_model.gaussian_prior_model_for_arguments(arguments))
  
          return mapper
docs: Creates a new model mapper from a dictionary mapping_matrix existing priors to new priors.
  
          Parameters
          ----------
          arguments: {Prior: Prior}
              A dictionary mapping_matrix priors to priors
  
          Returns
          -------
          model_mapper: ModelMapper
              A new model mapper with updated priors.