edlp_d8/sites/all/modules/contrib/migrate/migrate_tools/migrate_tools.module

<?php

/**
 * @file
 * Provides tools for implementing and managing migrations.
 */

/**
 * Implements hook_entity_type_build().
 */
function migrate_tools_entity_type_build(array &$entity_types) {
  // Inject our UI into the general migration and migration group config
  // entities.
  /** @var \Drupal\Core\Config\Entity\ConfigEntityType[] $entity_types */
  $entity_types['migration']
    ->set('admin_permission', 'administer migrations')
    ->setHandlerClass('list_builder', 'Drupal\migrate_tools\Controller\MigrationListBuilder')
    ->setFormClass('edit', 'Drupal\migrate_tools\Form\MigrationEditForm')
    ->setFormClass('delete', 'Drupal\migrate_tools\Form\MigrationDeleteForm')
    ->setLinkTemplate('list-form', '/admin/structure/migrate/manage/{migration_group}/migrations');

  $entity_types['migration_group']
    ->set('admin_permission', 'administer migrations')
    ->setHandlerClass('list_builder', 'Drupal\migrate_tools\Controller\MigrationGroupListBuilder')
    ->setFormClass('add', 'Drupal\migrate_tools\Form\MigrationGroupAddForm')
    ->setFormClass('edit', 'Drupal\migrate_tools\Form\MigrationGroupEditForm')
    ->setFormClass('delete', 'Drupal\migrate_tools\Form\MigrationGroupDeleteForm')
    ->setLinkTemplate('edit-form', '/admin/structure/migrate/manage/{migration_group}')
    ->setLinkTemplate('delete-form', '/admin/structure/migrate/manage/{migration_group}/delete');
}