public static function import_choices()
 {
     if (!current_user_can('frm_edit_forms')) {
         wp_die();
     }
     $field_id = absint($_REQUEST['field_id']);
     global $current_screen, $hook_suffix;
     // Catch plugins that include admin-header.php before admin.php completes.
     if (empty($current_screen) && function_exists('set_current_screen')) {
         $hook_suffix = '';
         set_current_screen();
     }
     if (function_exists('register_admin_color_schemes')) {
         register_admin_color_schemes();
     }
     $hook_suffix = $admin_body_class = '';
     if (get_user_setting('mfold') == 'f') {
         $admin_body_class .= ' folded';
     }
     if (function_exists('is_admin_bar_showing') && is_admin_bar_showing()) {
         $admin_body_class .= ' admin-bar';
     }
     if (is_rtl()) {
         $admin_body_class .= ' rtl';
     }
     $admin_body_class .= ' admin-color-' . sanitize_html_class(get_user_option('admin_color'), 'fresh');
     $prepop = array();
     FrmFieldsHelper::get_bulk_prefilled_opts($prepop);
     $field = FrmField::getOne($field_id);
     wp_enqueue_script('utils');
     wp_enqueue_style('formidable-admin', FrmAppHelper::plugin_url() . '/css/frm_admin.css');
     FrmAppHelper::load_admin_wide_js();
     include FrmAppHelper::plugin_path() . '/classes/views/frm-fields/import_choices.php';
     wp_die();
 }