social_course-8.x-2.11/modules/social_course_advanced/social_course_advanced.module

<?php

/**
 * @file
 * The social_course_advanced module.
 */

use Drupal\Core\Form\FormStateInterface;

/**
 * Implements hook_form_FORM_ID_form_alter().
 */
function social_course_advanced_form_group_course_advanced_edit_form_alter(array &$form, FormStateInterface $form_state): void {
  // Lets remove group type from flexible group.
  // Editing is useless since the options are all in there.
  if (isset($form['group_type']) && $form['group_type']['#disabled']) {
    // Remove all the options.
    // @see social_group_form_alter().
    unset($form['group_type']);
    unset($form['#fieldgroups']['group_settings']->children['group_type']);
    unset($form['#group_children']['group_type']);
  }
  $form['field_flexible_group_visibility']['#prefix'] = t('Altering the visibility options could result in changes in access for content within this group and the group itself.');

  $form['actions']['submit']['#submit'][] = '_social_flexible_group_edit_submit';
}

/**
 * Implements hook_social_group_settings_alter().
 */
function social_course_advanced_social_group_settings_alter(array &$group_types): void {
  $group_types[] = 'course_advanced';
}

/**
 * Implements hook_social_tagging_type_alter().
 */
function social_course_advanced_social_tagging_type_alter(array &$items): void {
  $items['group']['sets'][0]['bundles'][] = 'course_advanced';
}

/**
 * Implements hook_social_group_default_route_group_types().
 */
function social_course_advanced_social_group_default_route_group_types(): array {
  return [
    'course_advanced' => [
      'member' => 'view.group_information.page_group_about',
      'non-member' => 'view.group_information.page_group_about',
    ],
  ];
}