drupal_routes/sites/all/themes/bootstrap/templates/bootstrap/bootstrap-dropdown.func.php

<?php
/**
 * @file
 * Stub file for bootstrap_bootstrap_dropdown().
 */

/**
 * Returns HTML for a Bootstrap dropdown component.
 *
 * @ingroup theme_functions
 */
function bootstrap_bootstrap_dropdown($variables) {
  return drupal_render($variables['dropdown']);
}