Runs model fitting, error estimation and variable importance on fold level

runfolds(j = NULL, current_sample = NULL, data = NULL, i = NULL,
  formula = NULL, model_args = NULL, par_cl = NULL, par_mode = NULL,
  model_fun = NULL, pred_fun = NULL, imp_variables = NULL,
  imp_permutations = NULL, err_fun = NULL, train_fun = NULL,
  importance = NULL, current_res = NULL, current_impo = NULL,
  pred_args = NULL, pooled_obs_train = NULL, pooled_obs_test = NULL,
  pooled_pred_train = NULL, response = NULL, progress = NULL,
  is_factor_prediction = NULL, pooled_pred_test = NULL, coords = NULL,
  test_fun = NULL, imp_one_rep = NULL, do_gc = NULL, test_param = NULL,
  train_param = NULL)