/**
 * Form build callback for {store_key} multistep form.
 *
 * @param array $form
 *   Drupal form array.
 * @param array $form_state
 *   Drupal form_state array.
 * @param mixed $params
 *   Additional params passed into form steps.
 *
 * @return array
 *   Build Drupal form array.
 */
function {name}_{store_key}_form($form, &$form_state, $params) {
  return mforms_build('{store_key}', '{first_step}', $form_state, $params);
}