media_migration-8.x-1.x-dev/modules/media_migration_tools/media_migration_tools.module

<?php

/**
 * @file
 * Hooks and functions of Media Migration Tools.
 */

/**
 * Implements hook_migration_plugins_alter().
 */
function media_migration_tools_migration_plugins_alter(array &$migrations) {
  \Drupal::service('media_migration_tools.migration_plugin_alterer')->alter($migrations);
}