Example of using the MODX transliteration service

useTranslitService.php

<?php
$translitClassPath = $this->xpdo->getOption(
    'friendly_alias_translit_class_path', 
    $options, 
    $this->xpdo->getOption('core_path', $options, MODX_CORE_PATH) . 'components/'
);
if ($this->xpdo->getService('translit', $translitClass, $translitClassPath, $options)) {
    $alias = $this->xpdo->translit->translate($stringToApplyTransliterationTo, $translitTableName);
}