postoffice-1.0.x-dev/examples/postoffice_form_example/postoffice_form_example.module

<?php

/**
 * @file
 * Primary module hooks for Postoffice Form Example module.
 */

/**
 * Implements hook_theme().
 */
function postoffice_form_example_theme() {
  return [
    'email_greetings' => [
      'variables' => [
        'name' => '',
      ],
    ],
  ];
}