ext_localconf.php

<?php
defined('TYPO3_MODE') || die();

$config = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][$_EXTKEY]);

\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addPItoST43($_EXTKEY, 'Classes/Controller/Pi1/Pi1Controller.php', '_pi1', 'list_type', (bool)$config['cache_plugin_output']);

if (\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::isLoaded('dd_googlesitemap')) {
    // Hook for integrating ReStructured documentation into the Google Sitemap (requires EXT:dd_googlesitemap)
    $GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['dd_googlesitemap']['generateSitemapForPagesClass'][] = 'Causal\\Restdoc\\Hooks\\TxDdgooglesitemap';

    // Implement our own hook to slowly populate complete document structure
    $GLOBALS['TYPO3_CONF_VARS']['EXTCONF'][$_EXTKEY]['renderHook'][] = 'Causal\\Restdoc\\Hooks\\TableOfContents';
}

// Register new TypoScript content object
$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['tslib/class.tslib_content.php']['cObjTypeAndClass'][] = array(
    0 => 'REST_METADATA',
    1 => 'Causal\\Restdoc\\ContentObject\\RestMetadataContentObject',
);

if (\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::isLoaded('realurl')) {
    // RealURL auto-configuration
    $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/realurl/class.tx_realurl_autoconfgen.php']['extensionConfiguration'][$_EXTKEY] =
        'Causal\\Restdoc\\Hooks\\Realurl->registerDefaultConfiguration';

    // Hook to grant access to reStructuredText source files, works only for EXT:realurl 1.x
    if (is_dir(\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::extPath('realurl') . 'doc')) {
        $GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['realurl']['decodeSpURL_preProc'][] =
            'Causal\\Restdoc\\Hooks\\Realurl->decodeSpURL_preProc';
    }
}