comment_test.module

<?php

/**
 * @file
 * Dummy module implementing comment related hooks to test API interaction with
 * the Comment module.
 */

/**
 * Implements hook_entity_info_alter().
 */
function comment_test_entity_info_alter(&$info) {
  if (language_multilingual()) {

    // Enable language handling for comment fields.
    $info['comment']['translation']['comment_test'] = TRUE;
  }
}