SilverStripe Defined Route

//config.php
<?php
Director::addRules(100, array (
    PluginPage::$url_segment => 'PluginPage'


//PluginPage.php
<?php

class PluginPage extends Page_Controller {

    private static $allowed_actions = array (
        'detail'
    );

    static $url_segment = "my-route";

    /**
     * Initialize the controller and load the dependencies.
     */
    public function init() {
        parent::init();
    }

    /**
     * Controller action for the index view
     *
     * @return SSViewer
     */
    public function detail() {

        return $this->customise(array(
        ))->renderWith(array("PluginPage","Page"));
    }
}