degov-8.x-2.0/modules/degov_media_facts/degov_media_facts.module

<?php

use Drupal\degov_common\Common;

/**
 * Implements hook_preprocess().
 */
function degov_media_facts_preprocess(&$variables, $hook, &$info) {
  // Add template suggestions and libraries implemented in this module.
  Common::addThemeSuggestions($variables, $hook, $info, [
    'module_name' => 'degov_media_facts',
    'entity_type' => 'media',
    'entity_bundles' => ['facts'],
    'entity_view_modes' => ['usage', 'preview', 'search', 'embedded'],
  ]);
}

/**
 * Implements hook_install().
 */
function degov_media_facts_install() {
  $config = \Drupal::configFactory()
    ->getEditable('field.field.paragraph.media_reference.field_media_reference_media');
  $settings = $config->get('settings');

  if ($settings !== NULL && !in_array('facts', $settings['handler_settings']['target_bundles'])) {
    $settings['handler_settings']['target_bundles'][] = 'facts';
    $config->set('settings', $settings);
    $config->save(TRUE);
  }
}