event_platform-1.0.x-dev/event_platform_flag/event_platform_flag.install

<?php

/**
 * @file
 * Install, update and uninstall functions for the Event Platform Flag module.
 */

use Drupal\user\Entity\Role;

/**
 * Implements hook_install().
 */
function event_platform_flag_install() {
  // Add permission to view field_r and field_time_slot.
  foreach (['authenticated'] as $role) {
    $role_object = Role::load($role);
    $role_object->grantPermission('flag my_schedule');
    $role_object->grantPermission('unflag my_schedule');
    $role_object->save();
  }

  $config_factory = \Drupal::configFactory();
  $node_types = $config_factory->listAll('node.type.');
  if (in_array('node.type.bof', $node_types)) {
    $flag = $config_factory->getEditable('flag.flag.my_schedule');
    if ($flag) {
      $bundles = $flag->get('bundles');
      $bundles[] = 'bof';
      $flag->set('bundles', $bundles);
      $flag->save(TRUE);
    }
  }

  \Drupal::service('cache.config')->invalidateAll();
  \Drupal::service('cache.render')->invalidateAll();
}