ext_tables.php

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

(static function (string $_EXTKEY) {
    // Register additional sprite icons
    /** @var \TYPO3\CMS\Core\Imaging\IconRegistry $iconRegistry */
    $iconRegistry = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Imaging\IconRegistry::class);
    $iconRegistry->registerIcon('extensions-ig_ldap_sso_auth-overlay-ldap-record',
        \TYPO3\CMS\Core\Imaging\IconProvider\BitmapIconProvider::class,
        [
            'source' => 'EXT:' . $_EXTKEY . '/Resources/Public/Icons/overlay-ldap-record.png',
        ]
    );
    unset($iconRegistry);

    if (TYPO3_MODE === 'BE') {
        // Add BE module on top of system main module
        $typo3Branch = class_exists(\TYPO3\CMS\Core\Information\Typo3Version::class)
            ? (new \TYPO3\CMS\Core\Information\Typo3Version())->getBranch()
            : TYPO3_branch;
        if (version_compare($typo3Branch, '10.0', '<')) {
            \TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerModule(
                'Causal.' . $_EXTKEY,
                'system',
                'txigldapssoauthM1',
                'top',
                [
                    'Module' => implode(',', [
                        'index',
                        'status',
                        'search',
                        'importFrontendUsers', 'importBackendUsers',
                        'importFrontendUserGroups', 'importBackendUserGroups',
                    ]),
                ], [
                    'access' => 'admin',
                    'icon' => 'EXT:' . $_EXTKEY . '/Resources/Public/Icons/module-ldap.png',
                    'labels' => 'LLL:EXT:' . $_EXTKEY . '/Resources/Private/Language/locallang.xlf'
                ]
            );
        } else {
            \TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerModule(
                $_EXTKEY,
                'system',
                'txigldapssoauthM1',
                'top',
                [
                    \Causal\IgLdapSsoAuth\Controller\ModuleController::class => implode(',', [
                        'index',
                        'status',
                        'search',
                        'importFrontendUsers', 'importBackendUsers',
                        'importFrontendUserGroups', 'importBackendUserGroups',
                    ]),
                ], [
                    'access' => 'admin',
                    'icon' => 'EXT:' . $_EXTKEY . '/Resources/Public/Icons/module-ldap.png',
                    'labels' => 'LLL:EXT:' . $_EXTKEY . '/Resources/Private/Language/locallang.xlf'
                ]
            );
        }
    }

    // Initialize "context sensitive help" (csh)
    \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addLLrefForTCAdescr('tx_igldapssoauth_config', 'EXT:ig_ldap_sso_auth/Resources/Private/Language/locallang_csh_db.xlf');
})('ig_ldap_sso_auth');