cforge-2.0.x-dev/modules/cforge_events/cforge_events.install

<?php

/**
 * @file
 * Installation hooks.
 */

use \Drupal\user\Entity\Role;

/**
 * Implements hook_uninstall().
 */
function cforge_events_install() {
  Role::load('committee')
    ->grantPermission('create event content')
    ->grantPermission('delete any event content')
    ->grantPermission('edit any event content')
    ->save();
}