ext_tables.php

<?php

if (!defined('TYPO3_MODE')) {
    die('Access denied.');
}

(function () {
    // add help file
    \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addLLrefForTCAdescr(
        'tx_kesearch_filters',
        'EXT:ke_search/locallang_csh.xml'
    );

    // add module
    if (\TYPO3\CMS\Core\Utility\VersionNumberUtility::convertVersionNumberToInteger(TYPO3_branch) >=
        \TYPO3\CMS\Core\Utility\VersionNumberUtility::convertVersionNumberToInteger('10.0')
    ) {
        $extensionName = 'ke_search';
        $controller = \TeaminmediasPluswerk\KeSearch\Controller\BackendModuleController::class;
    } else {
        $extensionName = 'TeaminmediasPluswerk.ke_search';
        $controller = 'BackendModule';
    }

    \TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerModule(
        $extensionName,
        'web',
        'backend_module',
        '',
        array(
            $controller =>
                'startIndexing,indexedContent,indexTableInformation,'
                . 'searchwordStatistics,clearSearchIndex,lastIndexingReport,alert',
        ),
        array(
            'access' => 'user,group',
            'icon' => 'EXT:ke_search/Resources/Public/Icons/moduleicon.svg',
            'labels' => 'LLL:EXT:ke_search/Resources/Private/Language/locallang_mod.xml',
        )
    );

    // add scheduler task
    $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['scheduler']['tasks'][\TeaminmediasPluswerk\KeSearch\Scheduler\IndexerTask::class]
        = array(
        'extension' => 'ke_search',
        'title' => 'Indexing process for ke_search',
        'description' => 'This task updates the ke_search index'
    );

    /** @var \TYPO3\CMS\Core\Imaging\IconRegistry $iconRegistry */
    $iconRegistry = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Imaging\IconRegistry::class);
    $iconRegistry->registerIcon(
        'ext-kesearch-wizard-icon',
        'TYPO3\CMS\Core\Imaging\IconProvider\BitmapIconProvider',
        ['source' => 'EXT:ke_search/Resources/Public/Icons/moduleicon.svg']
    );
})();