islandora/islandora_collection/islandora_collection.install

<?php

/**
 * @file
 * This file contains all install related hooks.
 */

/**
 * Implements hook_install().
 */
function islandora_collection_install() {
  module_load_include('inc', 'islandora_collection', 'include/bundles');
  module_load_include('inc', 'islandora_collection', 'include/relations');

  // Create the islandora:collection content type.
  islandora_collection_define_bundles();

  // Create the pcdm:hasMember relation.
  islandora_collection_define_relations();
}