o365-2.0.3/modules/o365_contacts/o365_contacts.module

<?php

/**
 * @file
 * Primary module hooks for o365_contacts module.
 *
 * @DCG
 * This file is no longer required in Drupal 8.
 * @see https://www.drupal.org/node/2217931
 */

/**
 * Implements hook_theme().
 */
function o365_contacts_theme($existing, $type, $theme, $path) {
  return [
    'o365_contacts_search' => [
      'variables' => [
        'form' => NULL,
        'results' => NULL,
      ],
    ],
    'o365_contact' => [
      'variables' => [
        'userPrincipalName' => NULL,
        'givenName' => NULL,
        'surname' => NULL,
        'phone_number' => NULL,
        'presence' => NULL,
        'email' => NULL,
        'profile_picture' => NULL,
        'teams_video_call' => NULL,
        'teams_call' => NULL,
        'teams_chat' => NULL,
      ],
    ],
  ];
}